Adair, IL Weather & Growing Conditions
Tonight
51°F
Chance Rain Showers then Mostly Cloudy
A chance of rain showers before 11pm. Mostly cloudy. Low around 51, with temperatures rising to around 54 overnight. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 51°F | Chance Rain Showers then Mostly Cloudy | 10 to 15 mph SW | 27% |
| Wednesday | 58°F | Mostly Cloudy | 15 to 20 mph W | 10% |
| Wednesday Night | 45°F | Mostly Cloudy | 10 mph SW | 3% |
| Thursday | 57°F | Chance Rain Showers | 10 to 15 mph W | 27% |
| Thursday Night | 43°F | Chance Rain Showers | 5 to 10 mph NW | 32% |
| Friday | 52°F | Partly Sunny | 5 to 10 mph N | 8% |
| Friday Night | 32°F | Partly Cloudy | 0 to 5 mph N | 0% |
| Saturday | 52°F | Mostly Sunny | 0 to 5 mph NW | 0% |
| Saturday Night | 33°F | Mostly Clear | 0 mph | 1% |
| Sunday | 58°F | Sunny | 0 to 5 mph W | 2% |
| Sunday Night | 34°F | Clear | 0 mph | 0% |
| Monday | 64°F | Sunny | 0 to 5 mph SW | 0% |
| Monday Night | 40°F | Mostly Clear | 0 to 5 mph W | 0% |
| Tuesday | 65°F | Sunny | 0 mph | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Adair, IL
Last spring frost
Apr 17
First fall frost
Oct 22
Growing season
185 days
Hardiness zone
6a
Explore more for Adair, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Prairie City 2S, Il (13.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.