Salem, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Salem, a city in Marion County, Illinois.
This Afternoon
76°F
Chance Light Rain
A chance of rain and a slight chance of thunderstorms after 3pm. Mostly cloudy. High near 76, with temperatures falling to around 72 in the afternoon. South wind around 22 mph, with gusts as high as 33 mph. Chance of precipitation is 40%.
7-day forecast for Salem
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 76°F | Chance Light Rain | 22 mph S | 43% |
| Tonight | 55°F | Rain | 10 to 16 mph S | 91% |
| Wednesday | 66°F | Slight Chance Light Rain then Mostly Cloudy | 7 to 13 mph SW | 20% |
| Wednesday Night | 45°F | Partly Cloudy | 5 mph SW | 0% |
| Thursday | 69°F | Sunny | 3 to 12 mph SW | 2% |
| Thursday Night | 46°F | Slight Chance Light Rain then Mostly Cloudy | 3 mph W | 17% |
| Friday | 62°F | Partly Sunny | 2 to 9 mph NW | 6% |
| Friday Night | 41°F | Partly Cloudy | 1 to 6 mph NW | 1% |
| Saturday | 60°F | Mostly Sunny | 1 to 6 mph N | 1% |
| Saturday Night | 37°F | Partly Cloudy | 1 mph NW | 2% |
| Sunday | 60°F | Mostly Sunny | 1 to 9 mph W | 6% |
| Sunday Night | 36°F | Mostly Clear | 1 to 5 mph W | 5% |
| Monday | 61°F | Sunny | 2 to 8 mph W | 4% |
| Monday Night | 37°F | Mostly Clear | 2 mph SW | 3% |
Forecast source: National Weather Service (api.weather.gov) for Salem (38.628, -88.959). Updated through the day.
Growing snapshot for Salem
Last spring frost
Apr 9
First fall frost
Oct 26
Growing season
197 days
Hardiness zone
6b
More local growing data for Salem: nearby ZIP 62881 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Salem, Il (1 mi from Salem). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.