Sims, IL Weather & Growing Conditions
This Afternoon
79°F
Slight Chance Rain Showers
A slight chance of rain showers. Partly sunny. High near 79, with temperatures falling to around 75 in the afternoon. South southeast wind around 17 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 79°F | Slight Chance Rain Showers | 17 mph SSE | 17% |
| Tonight | 56°F | Showers And Thunderstorms | 8 to 17 mph S | 95% |
| Wednesday | 67°F | Slight Chance Rain Showers then Mostly Cloudy | 6 to 13 mph SW | 21% |
| Wednesday Night | 43°F | Partly Cloudy | 3 mph WSW | 0% |
| Thursday | 68°F | Sunny | 3 to 10 mph WSW | 0% |
| Thursday Night | 44°F | Mostly Cloudy | 2 mph WNW | 5% |
| Friday | 61°F | Mostly Cloudy | 2 to 10 mph NW | 2% |
| Friday Night | 38°F | Mostly Cloudy | 2 to 6 mph NNW | 1% |
| Saturday | 57°F | Mostly Sunny | 5 mph NNW | 0% |
| Saturday Night | 34°F | Partly Cloudy | 1 mph NNW | 1% |
| Sunday | 62°F | Sunny | 0 to 7 mph WNW | 6% |
| Sunday Night | 34°F | Mostly Clear | 3 mph NW | 5% |
| Monday | 65°F | Sunny | 1 to 8 mph W | 2% |
| Monday Night | 38°F | Mostly Clear | 3 mph SW | 0% |
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.