Salem, IL Weather & Growing Conditions
This Afternoon
76°F
Slight Chance T-storms
A slight chance of thunderstorms and a slight chance of rain after 5pm. Mostly cloudy. High near 76, with temperatures falling to around 72 in the afternoon. South wind around 22 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 76°F | Slight Chance T-storms | 22 mph S | 20% |
| Tonight | 55°F | Rain | 10 to 16 mph S | 98% |
| Wednesday | 65°F | Slight Chance Light Rain then Mostly Cloudy | 7 to 14 mph SW | 21% |
| Wednesday Night | 43°F | Partly Cloudy | 5 mph SW | 0% |
| Thursday | 67°F | Sunny | 3 to 12 mph W | 0% |
| Thursday Night | 43°F | Mostly Cloudy | 2 mph NW | 4% |
| Friday | 59°F | Mostly Cloudy | 3 to 10 mph NW | 4% |
| Friday Night | 37°F | Partly Cloudy | 1 to 6 mph N | 1% |
| Saturday | 56°F | Mostly Sunny | 1 to 5 mph NW | 0% |
| Saturday Night | 34°F | Partly Cloudy | 1 mph NW | 1% |
| Sunday | 61°F | Sunny | 0 to 8 mph W | 7% |
| Sunday Night | 34°F | Mostly Clear | 3 mph NW | 5% |
| Monday | 65°F | Sunny | 1 to 9 mph W | 3% |
| Monday Night | 38°F | Mostly Clear | 3 mph SW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Salem, IL
Last spring frost
Apr 9
First fall frost
Oct 26
Growing season
197 days
Hardiness zone
6b
Explore more for Salem, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Salem, Il (1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.