Summerfield, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Summerfield, a village in St. Clair County, Illinois.
Tonight
57°F
Rain
Rain before 4am, then a slight chance of drizzle between 4am and 5am, then a slight chance of rain. Cloudy, with a low around 57. South wind 7 to 15 mph, with gusts as high as 32 mph. Chance of precipitation is 100%.
7-day forecast for Summerfield
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 57°F | Rain | 7 to 15 mph S | 97% |
| Wednesday | 65°F | Slight Chance Drizzle then Mostly Cloudy | 7 to 15 mph W | 12% |
| Wednesday Night | 43°F | Partly Cloudy | 5 mph SW | 0% |
| Thursday | 67°F | Sunny | 5 to 12 mph W | 1% |
| Thursday Night | 45°F | Mostly Cloudy | 5 mph NW | 5% |
| Friday | 59°F | Mostly Cloudy | 5 to 12 mph NW | 7% |
| Friday Night | 39°F | Partly Cloudy | 2 to 7 mph N | 1% |
| Saturday | 56°F | Partly Sunny | 5 mph NW | 0% |
| Saturday Night | 36°F | Partly Cloudy | 1 mph NW | 0% |
| Sunday | 62°F | Sunny | 1 to 7 mph W | 7% |
| Sunday Night | 36°F | Mostly Clear | 3 mph W | 5% |
| Monday | 66°F | Sunny | 2 to 8 mph SW | 2% |
| Monday Night | 40°F | Mostly Clear | 3 mph SW | 1% |
| Tuesday | 69°F | Sunny | 2 to 6 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov) for Summerfield (38.596, -89.750). Updated through the day.
Growing snapshot for Summerfield
Last spring frost
Apr 12
First fall frost
Oct 20
Growing season
189 days
Hardiness zone
6b
More local growing data for Summerfield: nearby ZIP 62289 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Belleville Siu Rsch, Il (7.4 mi from Summerfield). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.