Salem, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Salem, a city in Marion County, Illinois.
Overnight
63°F
Clear
Clear, with a low around 63. Northeast wind around 1 mph.
7-day forecast for Salem
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 63°F | Clear | 1 mph NE | 0% |
| Tuesday | 87°F | Patchy Fog then Sunny | 1 mph NE | 0% |
| Tuesday Night | 64°F | Mostly Clear | 1 mph E | 0% |
| Wednesday | 88°F | Sunny | 1 mph S | 2% |
| Wednesday Night | 69°F | Partly Cloudy then Chance Showers And Thunderstorms | 2 mph S | 29% |
| Thursday | 86°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 mph SW | 55% |
| Thursday Night | 69°F | Chance Showers And Thunderstorms | 0 to 3 mph SE | 56% |
| Friday | 86°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 2 mph SW | 56% |
| Friday Night | 69°F | Chance Showers And Thunderstorms | 1 mph W | 35% |
| Saturday | 88°F | Chance Showers And Thunderstorms | 2 mph SW | 35% |
| Saturday Night | 71°F | Partly Cloudy | 2 mph S | 13% |
| Sunday | 90°F | Sunny | 2 to 8 mph SW | 8% |
| Sunday Night | 72°F | Mostly Clear | 7 mph S | 5% |
| Monday | 91°F | Mostly Sunny | 7 mph SW | 6% |
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 Aug 4, 2026.