Adair, IL Weather & Growing Conditions
Overnight
69°F
Patchy Fog
Patchy fog after 4am. Partly cloudy. Low around 69, with temperatures rising to around 72 overnight. South wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 69°F | Patchy Fog | 5 mph S | 9% |
| Saturday | 87°F | Slight Chance Showers And Thunderstorms then Mostly Cloudy | 5 to 10 mph S | 18% |
| Saturday Night | 67°F | Chance Showers And Thunderstorms | 5 mph SW | 65% |
| Sunday | 75°F | Showers And Thunderstorms | 0 to 10 mph N | 79% |
| Sunday Night | 58°F | Showers And Thunderstorms | 10 to 15 mph NE | 84% |
| Monday | 65°F | Showers And Thunderstorms Likely | 10 to 15 mph NE | 71% |
| Monday Night | 53°F | Chance Rain Showers | 10 to 15 mph NE | 47% |
| Tuesday | 63°F | Slight Chance Rain Showers | 10 mph NE | 21% |
| Tuesday Night | 49°F | Partly Cloudy | 5 to 10 mph NE | 7% |
| Wednesday | 66°F | Mostly Sunny | 5 mph N | 2% |
| Wednesday Night | 52°F | Partly Cloudy | 0 to 5 mph NE | 1% |
| Thursday | 69°F | Mostly Sunny | 0 to 5 mph NE | 5% |
| Thursday Night | 54°F | Partly Cloudy | 0 mph | 4% |
| Friday | 71°F | Mostly Sunny | 0 to 5 mph NE | 5% |
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 Sep 19, 2026.