New Salem, IL Weather & Growing Conditions
Tonight
54°F
Chance Light Rain
A chance of rain before 10pm, then a slight chance of drizzle between 10pm and midnight, then a slight chance of rain between midnight and 1am, then a slight chance of drizzle. Cloudy, with a low around 54. Southwest wind around 12 mph, with gusts as high as 24 mph. Chance of precipitation is 30%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Chance Light Rain | 12 mph SW | 29% |
| Wednesday | 59°F | Slight Chance Drizzle then Cloudy | 10 to 15 mph SW | 12% |
| Wednesday Night | 44°F | Mostly Cloudy | 6 to 9 mph SW | 0% |
| Thursday | 60°F | Mostly Sunny | 7 to 12 mph W | 7% |
| Thursday Night | 43°F | Mostly Cloudy then Slight Chance T-storms | 6 mph NW | 19% |
| Friday | 55°F | Mostly Cloudy | 8 mph N | 6% |
| Friday Night | 37°F | Mostly Cloudy | 1 to 5 mph N | 1% |
| Saturday | 55°F | Mostly Sunny | 3 mph NW | 1% |
| Saturday Night | 37°F | Mostly Clear | 2 mph W | 1% |
| Sunday | 61°F | Sunny | 2 to 7 mph W | 8% |
| Sunday Night | 37°F | Mostly Clear | 3 mph W | 3% |
| Monday | 65°F | Sunny | 3 to 8 mph SW | 1% |
| Monday Night | 42°F | Mostly Clear | 5 mph SW | 1% |
| Tuesday | 67°F | Sunny | 5 mph NW | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for New Salem, IL
Last spring frost
Apr 14
First fall frost
Oct 21
Growing season
189 days
Hardiness zone
6a
Explore more for New Salem, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Pittsfield #2, Il (5.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.