Summerfield, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Summerfield, a village in St. Clair County, Illinois.
Tonight
72°F
Partly Cloudy
Partly cloudy, with a low around 72. Southeast wind 5 to 8 mph.
7-day forecast for Summerfield
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 72°F | Partly Cloudy | 5 to 8 mph SE | 13% |
| Saturday | 97°F | Mostly Sunny | 3 to 8 mph SW | 6% |
| Saturday Night | 73°F | Partly Cloudy | 5 mph S | 1% |
| Sunday | 93°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 to 7 mph W | 17% |
| Sunday Night | 67°F | Slight Chance Showers And Thunderstorms | 7 mph N | 54% |
| Monday | 81°F | Showers And Thunderstorms Likely | 6 to 12 mph N | 65% |
| Monday Night | 60°F | Showers And Thunderstorms Likely | 7 to 12 mph N | 65% |
| Tuesday | 72°F | Chance Rain Showers then Mostly Cloudy | 9 to 13 mph N | 27% |
| Tuesday Night | 55°F | Mostly Cloudy | 5 to 13 mph N | 6% |
| Wednesday | 74°F | Mostly Sunny | 6 to 10 mph N | 3% |
| Wednesday Night | 55°F | Partly Cloudy | 2 to 8 mph N | 2% |
| Thursday | 76°F | Mostly Sunny | 2 to 8 mph N | 1% |
| Thursday Night | 58°F | Partly Cloudy | 2 to 7 mph N | 2% |
| Friday | 76°F | Mostly Sunny | 2 to 8 mph NE | 4% |
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 Sep 19, 2026.