All 47 activities

Spray weeds

• Needs 2 hours in a row of daylight.
• Air at least 45°F.
• No hotter than 85°F (86–90°F is borderline).
• Wind between 3 and 10 mph (calmer air can mean a temperature inversion that carries drift).
• Gusts at or under 15 mph. (Fairsky default)
• Rain chance at or below 20%. (Fairsky default)
• No rain for 4 hours after you finish.

Sources: NC State Extension: spray drift and wind speed · UNL CropWatch: avoiding herbicide drift · UNL CropWatch: managing applications to avoid drift · Rutgers: herbicide drift and temperature · Roundup concentrate label (rainfast time)

This week's verdict by city →

Put down pre-emergent

• Soil temperature is estimated from the average air temperature over about five days (past and forecast); Fairsky labels it as an estimate.
• Spring: below about 50°F soil it's too early; roughly 50–58°F is prime time; up to 65°F is late but not lost; above that, crabgrass is already up.
• Rain helps: about a quarter to half an inch in the next three days waters it in. More than an inch in the next 24 hours means hold off, since a downpour can wash granules away. (Fairsky default)
• Fall (August–October, soil 55–70°F): a window for winter weeds like henbit, chickweed and Poa annua.
• Wind under 20 mph while spreading. (Fairsky default)

Sources: Purdue Turf: pre-emergence timing · K-State: predicting crabgrass emergence · Iowa State: how to control crabgrass

This week's verdict by city →

Seed the lawn

• GO when estimated soil is 50–65°F and the next five days average highs of 60–80°F. (Fairsky default)
• NO when estimated soil is under 45°F or a hard freeze (28°F or colder) is ahead. (Fairsky default)
• Hold off when an inch or more of rain is due in the next 24 hours; it washes seed away. (Fairsky default)
• Hot (soil above 70°F or highs above 85°F) means slow, stressed germination for cool-season grass.
• Wind under 20 mph while spreading. (Fairsky default)

Sources: Purdue Turf: optimum temperatures for seed germination

This week's verdict by city →

Fertilize the lawn

• Needs 1 hour in a row of daylight.
• Air at least 35°F.
• No hotter than 85°F (86–95°F is borderline).
• Wind at or under 20 mph.
• Rain chance at or below 50%. (Fairsky default)
• No heavy rain (half an inch or more) in the 48 hours after; a light shower helps water it in. (Fairsky default)

Sources: Cornell: how best to fertilize your lawn · UNL Turf: high temps are hard on cool-season grasses

Mow the lawn

• Needs 1 hour in a row of daylight.
• No hotter than 85°F (86–90°F is borderline).
• Air at least 3°F above the dew point, so surfaces don't stay damp. (Fairsky default)
• Rain chance at or below 30%. (Fairsky default)
• No rain in the 3 hours before, so surfaces are dry. (Fairsky default)

Sources: UNL Turf: high temps are hard on cool-season grasses

Cover the plants

• Cover tender plants when the overnight low is forecast at 34°F or colder.
• At 35–36°F, Fairsky still says cover when the night looks clear and calm (little cloud, wind 5 mph or less), because the ground can frost before the air hits 32°F. (Fairsky default)
• 32°F or colder is a freeze.
• 28°F or colder is a hard freeze, which kills most tender vegetation; bring pots inside, since covers may not be enough.

Sources: NWS glossary: frost advisory · NWS glossary: hard freeze

This week's verdict by city →

Plant or transplant

• Needs 2 hours in a row of daylight.
• Air at least 45°F. (Fairsky default)
• No hotter than 85°F (86–90°F is borderline). (Fairsky default)
• Wind at or under 10 mph. (Fairsky default)
• Gusts at or under 20 mph. (Fairsky default)
• Rain chance at or below 40%. (Fairsky default)
• No thunderstorms (when thunder roars, go indoors).
• The first night's low stays at 36°F or warmer.

Sources: UGA Extension: transplant on a cloudy, wind-free day · Univ. of Delaware Extension: transplanting and frost · NWS: frost advisory criteria · NWS: lightning safety (when thunder roars, go indoors)

Water the lawn (early morning is best)

• Needs 1 hour in a row of daylight.
• Air at least 40°F. (Fairsky default)
• Wind at or under 10 mph. (Fairsky default)
• Rain chance at or below 40%. (Fairsky default)
• No thunderstorms (when thunder roars, go indoors).
• Skip it when a quarter inch or more of rain is due in the next 24 hours. (Fairsky default)

Sources: Iowa State Extension: how and when to water the lawn · NWS: lightning safety (when thunder roars, go indoors)

Aerate the lawn

• Needs 2 hours in a row of daylight.
• No hotter than 85°F (86–90°F is borderline).
• Rain chance at or below 30%. (Fairsky default)
• No thunderstorms (when thunder roars, go indoors).
• No rain in the 12 hours before, so surfaces are dry. (Fairsky default)

Sources: Virginia Cooperative Extension: aerating your lawn · UNL Turf: high temps are hard on cool-season grasses · NWS: lightning safety (when thunder roars, go indoors)

Harvest the garden

• Needs 1 hour in a row of daylight.
• No hotter than 85°F (86–90°F is borderline). (Fairsky default)
• Air at least 3°F above the dew point, so surfaces don't stay damp. (Fairsky default)
• Rain chance at or below 30%. (Fairsky default)
• No thunderstorms (when thunder roars, go indoors).

Sources: WSU Extension: when to harvest vegetables · Illinois Extension: harvesting vegetables · NWS: lightning safety (when thunder roars, go indoors)

Apply fungicide

• Needs 1 hour in a row of daylight.
• Air at least 50°F.
• No hotter than 85°F.
• Wind between 3 and 10 mph (calmer air can mean a temperature inversion that carries drift).
• Gusts at or under 15 mph. (Fairsky default)
• Rain chance at or below 20%. (Fairsky default)
• No thunderstorms (when thunder roars, go indoors).
• No rain for 4 hours after you finish.

Sources: Cornell Vegetable Program: fungicide rainfastness · UMD Extension: horticultural oil temperatures · UNL CropWatch: avoiding spray drift · NWS: lightning safety (when thunder roars, go indoors)

Spread mulch

• Needs 3 hours in a row of daylight.
• Feels-like temperature (heat index) 90°F or lower; 91–103°F is borderline, hotter is a no.
• Wind at or under 20 mph. (Fairsky default)
• Rain chance at or below 40%. (Fairsky default)
• No thunderstorms (when thunder roars, go indoors).

Sources: Cornell Cooperative Extension Nassau: mulches · NWS: heat index categories · OSHA: heat index and outdoor work · NWS: lightning safety (when thunder roars, go indoors)

Stain the deck

• Needs 4 hours in a row of daylight.
• Air at least 50°F (45–49°F is borderline).
• No hotter than 90°F.
• Air at least 5°F above the dew point, so surfaces don't stay damp. (Fairsky default)
• Humidity at or below 85%. (Fairsky default)
• Wind at or under 15 mph. (Fairsky default)
• Rain chance at or below 20%. (Fairsky default)
• No rain in the 48 hours before, so surfaces are dry.
• No rain for 24 hours after you finish.
• The first night's low stays at 45°F or warmer.

Sources: Sherwin-Williams: applying exterior stains · Sherwin-Williams: how to plan deck staining · Cabot stain technical data sheet · Thompson's WaterSeal transparent sealer

This week's verdict by city →

Paint outside

• Needs 4 hours in a row of daylight.
• Air at least 40°F (35–39°F is borderline).
• No hotter than 90°F.
• Air at least 5°F above the dew point, so surfaces don't stay damp.
• Humidity at or below 85%. (Fairsky default)
• Wind at or under 15 mph. (Fairsky default)
• Gusts at or under 25 mph. (Fairsky default)
• Rain chance at or below 20%. (Fairsky default)
• No rain in the 6 hours before, so surfaces are dry.
• No rain for 4 hours after you finish.
• The first night's low stays at 40°F or warmer. (Fairsky default)

Sources: Benjamin Moore exterior paint data sheet · Sherwin-Williams Duration exterior data sheet

This week's verdict by city →

Pour concrete

• Needs 4 hours in a row of daylight.
• Air at least 40°F (32–39°F is borderline).
• No hotter than 85°F (86–90°F is borderline).
• Wind at or under 20 mph. (Fairsky default)
• Rain chance at or below 20%. (Fairsky default)
• No rain for 24 hours after you finish.
• Stays above 32°F for 48 hours after (below 40°F, plan on blankets).

Sources: ACI 306R-16 cold-weather concreting (STRUCTURE magazine) · NIH technical bulletin: cold weather concreting · Euclid Chemical: preventing rapid evaporation · Quikrete 5000 data sheet

This week's verdict by city →

Seal the driveway

• Needs 3 hours in a row of daylight.
• Air at least 55°F (50–54°F is borderline).
• No hotter than 95°F. (Fairsky default)
• Rain chance at or below 10%. (Fairsky default)
• No rain in the 12 hours before, so surfaces are dry. (Fairsky default)
• No rain for 36 hours after you finish.
• The first night's low stays at 50°F or warmer.

Sources: SealMaster sealcoating FAQ

This week's verdict by city →

Pressure-wash

• Needs 2 hours in a row of daylight.
• Air at least 40°F. (Fairsky default)
• Wind at or under 20 mph.
• Rain chance at or below 40%. (Fairsky default)
• Stays above 32°F for 6 hours after. (Fairsky default)

No published source gave numbers for this one; every threshold is a Fairsky default.

Drip the faucets

• Drip faucets on outside walls and in unheated spaces when the overnight low is forecast at 20°F or colder.
• At 21–25°F, Fairsky gives a heads-up. (Fairsky default)

Sources: State Farm: frozen pipes · Texas A&M AgriLife: winter storms and frozen pipes

Clean the gutters

• Needs 2 hours in a row of daylight.
• Feels-like temperature (heat index) 90°F or lower; 91–103°F is borderline, hotter is a no.
• Wind at or under 15 mph. (Fairsky default)
• Gusts at or under 25 mph. (Fairsky default)
• Rain chance at or below 20%. (Fairsky default)
• No ice: below-freezing temperatures with or just after rain or snow are a no.
• No thunderstorms (when thunder roars, go indoors).
• No rain in the 3 hours before, so surfaces are dry. (Fairsky default)

Sources: CPWR/NIOSH hazard alert: ladder safety · OSHA 1926.451: no work in storms, high winds, ice · NWS: heat index categories · NWS: lightning safety (when thunder roars, go indoors)

Work on the roof

• Needs 4 hours in a row of daylight.
• Feels-like temperature (heat index) 90°F or lower; 91–103°F is borderline, hotter is a no.
• Air at least 3°F above the dew point, so surfaces don't stay damp. (Fairsky default)
• Wind at or under 20 mph. (Fairsky default)
• Gusts at or under 30 mph.
• Rain chance at or below 20%. (Fairsky default)
• No ice: below-freezing temperatures with or just after rain or snow are a no.
• No thunderstorms (when thunder roars, go indoors).
• No rain in the 6 hours before, so surfaces are dry. (Fairsky default)

Sources: OSHA 1926.451: no work in storms, high winds, ice · NIOSH/CPWR: roofing safety, weather to work? · OSHA: heat index and outdoor work · NWS: heat index categories · NWS: lightning safety (when thunder roars, go indoors)

Caulk the windows

• Needs 2 hours in a row of daylight.
• Air at least 40°F.
• No hotter than 100°F.
• Rain chance at or below 20%. (Fairsky default)
• No thunderstorms (when thunder roars, go indoors).
• No rain in the 6 hours before, so surfaces are dry. (Fairsky default)
• No rain for 24 hours after you finish.
• Stays above 32°F for 24 hours after.

Sources: DAP Dynaflex 230 technical data sheet · NWS: lightning safety (when thunder roars, go indoors)

Lay sod

• Needs 3 hours in a row of daylight.
• Air at least 35°F. (Fairsky default)
• No hotter than 85°F (86–90°F is borderline).
• Feels-like temperature (heat index) 90°F or lower; 91–103°F is borderline, hotter is a no.
• Wind at or under 20 mph. (Fairsky default)
• Rain chance at or below 40%. (Fairsky default)
• No thunderstorms (when thunder roars, go indoors).

Sources: UNL Extension: establishing a lawn from sod · UNL Turf: high temps are hard on cool-season grasses · NWS: heat index categories · NWS: lightning safety (when thunder roars, go indoors)

Epoxy the garage floor

• Needs 3 hours in a row of daylight.
• Air at least 60°F.
• No hotter than 85°F.
• Air at least 5°F above the dew point, so surfaces don't stay damp.
• Humidity at or below 85%.
• Stays above 60°F for 24 hours after. (Fairsky default)

Sources: Rust-Oleum EpoxyShield technical data sheet

Hang the holiday lights

• Needs 2 hours in a row of daylight.
• Feels-like temperature (wind chill) 20°F or warmer; down to -19°F is borderline. (Fairsky default)
• Wind at or under 15 mph. (Fairsky default)
• Gusts at or under 25 mph. (Fairsky default)
• Rain chance at or below 30%. (Fairsky default)
• No ice: below-freezing temperatures with or just after rain or snow are a no.
• No thunderstorms (when thunder roars, go indoors).
• No rain in the 3 hours before, so surfaces are dry. (Fairsky default)

Sources: CPWR/NIOSH hazard alert: ladder safety · CPSC: holiday decorating safety · NWS: wind chill chart (frostbite times) · NWS: lightning safety (when thunder roars, go indoors)

Burn the brush pile

• Needs 3 hours in a row of daylight.
• No hotter than 90°F.
• Humidity at least 35% (25–34% is borderline, drier is a no).
• Wind at or under 10 mph.
• Gusts at or under 15 mph. (Fairsky default)
• Any Red Flag Warning is a no. Always check your local burn rules and bans first.

Sources: Kentucky Division of Forestry: safe debris burning · Alabama Forestry Commission: caution burning · NWS: what is a Red Flag Warning

Grill out

• Needs 2 hours in a row.
• Feels-like temperature (heat index) 90°F or lower; 91–103°F is borderline, hotter is a no.
• Wind at or under 20 mph. (Fairsky default)
• Rain chance at or below 30%. (Fairsky default)
• No thunderstorms (when thunder roars, go indoors).

Sources: NWS: lightning safety (when thunder roars, go indoors) · NWS: heat index categories

Throw an outdoor party

• Needs 4 hours in a row.
• Feels-like temperature (heat index) 90°F or lower; 91–103°F is borderline, hotter is a no.
• Feels-like temperature (wind chill) 55°F or warmer; down to 45°F is borderline. (Fairsky default)
• Wind at or under 20 mph. (Fairsky default)
• Rain chance at or below 20%. (Fairsky default)
• No thunderstorms (when thunder roars, go indoors).

Sources: NWS: lightning safety (when thunder roars, go indoors) · NWS: heat index categories

Have a campfire

• Needs 3 hours in a row.
• No hotter than 90°F. (Fairsky default)
• Humidity at least 35% (25–34% is borderline, drier is a no).
• Wind at or under 10 mph.
• Gusts at or under 15 mph. (Fairsky default)
• No thunderstorms (when thunder roars, go indoors).
• Any Red Flag Warning is a no. Always check your local burn rules and bans first.

Sources: Smokey Bear: campfire safety · Klamath County Fire District 1: burning rules · SC Forestry Commission: think before you burn · Alabama Forestry Commission: caution burning · NWS: what is a Red Flag Warning

Hang the laundry out

• Needs 4 hours in a row of daylight.
• Humidity at or below 70%. (Fairsky default)
• Wind at or under 25 mph. (Fairsky default)
• Rain chance at or below 20%. (Fairsky default)
• No thunderstorms (when thunder roars, go indoors).

Sources: NWS: lightning safety (when thunder roars, go indoors)

Wash the car

• Needs 1 hour in a row of daylight.
• Air at least 35°F. (Fairsky default)
• Rain chance at or below 20%. (Fairsky default)
• No thunderstorms (when thunder roars, go indoors).
• No rain for 24 hours after you finish. (Fairsky default)

Sources: NWS: lightning safety (when thunder roars, go indoors)

Walk the dog

• Needs 1 hour in a row.
• Feels-like temperature (heat index) 90°F or lower; 91–103°F is borderline, hotter is a no.
• Feels-like temperature (wind chill) 10°F or warmer; down to -19°F is borderline. (Fairsky default)
• Estimated sun-baked pavement under 125°F. (Fairsky default)
• Rain chance at or below 50%. (Fairsky default)
• No thunderstorms (when thunder roars, go indoors).

Sources: AKC: hot pavement and dog paws · NWS: heat index categories · NWS: wind chill chart (frostbite times) · NWS: lightning safety (when thunder roars, go indoors)

Hit the playground

• Needs 2 hours in a row of daylight.
• Feels-like temperature (heat index) 90°F or lower; 91–103°F is borderline, hotter is a no.
• Feels-like temperature (wind chill) 32°F or warmer; down to 10°F is borderline. (Fairsky default)
• Estimated sun-baked pavement under 120°F.
• Estimated UV index above 7 is flagged (sun protection).
• Rain chance at or below 30%. (Fairsky default)
• No thunderstorms (when thunder roars, go indoors).
• No rain in the 2 hours before, so surfaces are dry. (Fairsky default)

Sources: CPSC: hot metal playground decks · CPSC: playground safety · NWS: heat index categories · EPA: UV Index categories · NWS: lightning safety (when thunder roars, go indoors)

Have a picnic

• Needs 3 hours in a row of daylight.
• Feels-like temperature (heat index) 90°F or lower; 91–103°F is borderline, hotter is a no.
• Feels-like temperature (wind chill) 55°F or warmer; down to 45°F is borderline. (Fairsky default)
• Wind at or under 15 mph. (Fairsky default)
• Rain chance at or below 20%. (Fairsky default)
• No thunderstorms (when thunder roars, go indoors).

Sources: NWS: lightning safety (when thunder roars, go indoors) · NWS: heat index categories

Go for a run

• Needs 1 hour in a row.
• Feels-like temperature (heat index) 90°F or lower; 91–103°F is borderline, hotter is a no.
• Feels-like temperature (wind chill) 10°F or warmer; down to -19°F is borderline. (Fairsky default)
• Rain chance at or below 50%. (Fairsky default)
• No ice: below-freezing temperatures with or just after rain or snow are a no.
• No thunderstorms (when thunder roars, go indoors).

Sources: NWS: heat index categories · NWS: wind chill chart (frostbite times) · NWS: lightning safety (when thunder roars, go indoors)

Go for a ride

• Needs 2 hours in a row of daylight.
• Feels-like temperature (heat index) 90°F or lower; 91–103°F is borderline, hotter is a no.
• Feels-like temperature (wind chill) 20°F or warmer; down to -19°F is borderline. (Fairsky default)
• Wind at or under 18 mph. (Fairsky default)
• Gusts at or under 30 mph. (Fairsky default)
• Rain chance at or below 30%. (Fairsky default)
• No ice: below-freezing temperatures with or just after rain or snow are a no.
• No thunderstorms (when thunder roars, go indoors).

Sources: NWS: Beaufort wind scale · NWS: heat index categories · NWS: wind chill chart (frostbite times) · NWS: lightning safety (when thunder roars, go indoors)

Go for a hike

• Needs 4 hours in a row of daylight.
• Feels-like temperature (heat index) 90°F or lower; 91–103°F is borderline, hotter is a no.
• Feels-like temperature (wind chill) 20°F or warmer; down to -19°F is borderline. (Fairsky default)
• Wind at or under 30 mph.
• Gusts at or under 45 mph. (Fairsky default)
• Rain chance at or below 30%. (Fairsky default)
• No thunderstorms (when thunder roars, go indoors).

Sources: NPS: lightning safety outdoors · NWS glossary: wind advisory · NWS: heat index categories · NWS: wind chill chart (frostbite times)

Play a round of golf

• Needs 4 hours in a row of daylight.
• Feels-like temperature (heat index) 90°F or lower; 91–103°F is borderline, hotter is a no.
• Feels-like temperature (wind chill) 45°F or warmer; down to 32°F is borderline. (Fairsky default)
• Wind at or under 20 mph. (Fairsky default)
• Rain chance at or below 30%. (Fairsky default)
• No thunderstorms (when thunder roars, go indoors).

Sources: NWS: lightning safety (when thunder roars, go indoors) · NPS: lightning safety outdoors · NWS: heat index categories

Go fishing

• Needs 3 hours in a row.
• Feels-like temperature (heat index) 90°F or lower; 91–103°F is borderline, hotter is a no.
• Feels-like temperature (wind chill) 20°F or warmer; down to -19°F is borderline. (Fairsky default)
• Wind at or under 18 mph. (Fairsky default)
• Rain chance at or below 40%. (Fairsky default)
• No thunderstorms (when thunder roars, go indoors).

Sources: NWS: lightning safety (when thunder roars, go indoors) · NWS: Beaufort wind scale · NWS: heat index categories · NWS: wind chill chart (frostbite times)

Take the boat or kayak out

• Needs 3 hours in a row of daylight.
• Feels-like temperature (heat index) 90°F or lower; 91–103°F is borderline, hotter is a no.
• Feels-like temperature (wind chill) 55°F or warmer; down to 40°F is borderline. (Fairsky default)
• Wind at or under 12 mph.
• Gusts at or under 23 mph.
• Visibility at least 0.5 miles.
• Rain chance at or below 30%. (Fairsky default)
• No thunderstorms (when thunder roars, go indoors).

Sources: American Canoe Association: Beaufort scale for paddlers · NWS: Small Craft Advisory criteria by region · NWS: Beaufort wind scale · NWS glossary: dense fog advisory · NWS: lightning safety (when thunder roars, go indoors) · NWS: heat index categories

Go to the beach or pool

• Needs 3 hours in a row of daylight.
• Feels-like temperature (heat index) 90°F or lower; 91–103°F is borderline, hotter is a no.
• Feels-like temperature (wind chill) 75°F or warmer; down to 65°F is borderline. (Fairsky default)
• Estimated UV index above 7 is flagged (sun protection).
• Wind at or under 20 mph. (Fairsky default)
• Rain chance at or below 30%. (Fairsky default)
• No thunderstorms (when thunder roars, go indoors).

Sources: NWS: lightning safety (when thunder roars, go indoors) · NWS: heat index categories · EPA: UV Index categories

Go stargazing

• Needs 2 hours in a row after dark.
• Feels-like temperature (wind chill) 20°F or warmer; down to -19°F is borderline. (Fairsky default)
• Cloud cover 30% or less. (Fairsky default)
• Moon less than 50% lit is best. (Fairsky default)
• Rain chance at or below 20%. (Fairsky default)
• No thunderstorms (when thunder roars, go indoors).

Sources: NWS: wind chill chart (frostbite times) · NWS: lightning safety (when thunder roars, go indoors)

Shoot golden-hour photos

• Needs 1 hour in a row around sunrise or sunset.
• Only the hours when the sun sits low, just above or just below the horizon.
• Cloud cover 80% or less. (Fairsky default)
• Rain chance at or below 30%. (Fairsky default)
• No thunderstorms (when thunder roars, go indoors).

Sources: NWS: lightning safety (when thunder roars, go indoors)

Fly the drone

• Needs 1 hour in a row of daylight.
• Air at least 14°F.
• No hotter than 104°F.
• Wind at or under 15 mph. (Fairsky default)
• Gusts at or under 24 mph.
• Visibility at least 3 miles.
• Rain chance at or below 20%. (Fairsky default)
• No thunderstorms (when thunder roars, go indoors).

Sources: DJI Mini 4 Pro specs (check your drone's) · 14 CFR 107.51: visibility for small drones · FAA B4UFLY: check where you can fly · NWS: lightning safety (when thunder roars, go indoors)

Fly a kite

• Needs 1 hour in a row of daylight.
• Wind between 8 and 20 mph.
• Gusts at or under 30 mph.
• Rain chance at or below 20%. (Fairsky default)
• No thunderstorms (when thunder roars, go indoors).

Sources: Sheffield Hallam University: flying kites · NWS: Beaufort wind scale · NWS: lightning safety (when thunder roars, go indoors)

Drive to work

• Needs 1 hour in a row.
• Wind at or under 40 mph.
• Gusts at or under 58 mph.
• Visibility at least 0.5 miles.
• Rain heavier than 0.3" in an hour is a no.
• No ice: below-freezing temperatures with or just after rain or snow are a no.

Sources: FHWA: how weather affects roads · NWS glossary: dense fog advisory · NWS glossary: freezing rain · NWS glossary: high wind warning

Move house

• Needs 4 hours in a row of daylight.
• Feels-like temperature (heat index) 90°F or lower; 91–103°F is borderline, hotter is a no.
• Feels-like temperature (wind chill) 20°F or warmer; down to -19°F is borderline. (Fairsky default)
• Wind at or under 25 mph. (Fairsky default)
• Rain chance at or below 20%. (Fairsky default)
• No ice: below-freezing temperatures with or just after rain or snow are a no.
• No thunderstorms (when thunder roars, go indoors).

Sources: NWS: heat index categories · OSHA: heat index and outdoor work · NWS: wind chill chart (frostbite times) · NWS: lightning safety (when thunder roars, go indoors)

Check flight weather

• Needs 3 hours in a row.
• Wind at or under 30 mph.
• Gusts at or under 45 mph. (Fairsky default)
• Visibility at least 1 mile. (Fairsky default)
• Rain heavier than 0.3" in an hour is a no.
• No ice: below-freezing temperatures with or just after rain or snow are a no.
• No thunderstorms (when thunder roars, go indoors).

Sources: FAA: weather and air traffic delays · NWS glossary: wind advisory · NWS glossary: freezing rain · NWS: lightning safety (when thunder roars, go indoors)