Sims, IL Weather & Growing Conditions
Overnight
56°F
Chance Rain Showers
A chance of rain showers. Mostly cloudy. Low around 56, with temperatures rising to around 59 overnight. South southwest wind around 9 mph. Chance of precipitation is 30%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 56°F | Chance Rain Showers | 9 mph SSW | 29% |
| Wednesday | 64°F | Mostly Cloudy | 6 to 12 mph WSW | 13% |
| Wednesday Night | 43°F | Partly Cloudy | 3 mph WSW | 0% |
| Thursday | 67°F | Sunny | 3 to 9 mph WSW | 0% |
| Thursday Night | 44°F | Partly Cloudy | 2 mph WNW | 0% |
| Friday | 59°F | Partly Sunny | 2 to 10 mph NNW | 1% |
| Friday Night | 36°F | Partly Cloudy | 2 to 7 mph NNW | 0% |
| Saturday | 56°F | Mostly Sunny | 5 mph NNW | 0% |
| Saturday Night | 32°F | Partly Cloudy | 1 mph NNW | 0% |
| Sunday | 61°F | Sunny | 0 to 7 mph NW | 1% |
| Sunday Night | 33°F | Clear | 2 mph NW | 1% |
| Monday | 64°F | Sunny | 0 to 5 mph WSW | 0% |
| Monday Night | 38°F | Clear | 2 mph SW | 1% |
| Tuesday | 68°F | Sunny | 1 to 5 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Sims, IL
Last spring frost
Apr 7
First fall frost
Oct 26
Growing season
201 days
Hardiness zone
6b
Explore more for Sims, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Fairfield Radio Wfiw, Il (11.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.