Prairietown, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Prairietown, a community in Madison County, Illinois.
This Afternoon
96°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Sunny, with a high near 96. Heat index values as high as 103. Southeast wind around 5 mph. Chance of precipitation is 30%.
7-day forecast for Prairietown
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 96°F | Chance Showers And Thunderstorms | 5 mph SE | 25% |
| Tonight | 70°F | Slight Chance Showers And Thunderstorms then Mostly Clear | 6 mph SE | 23% |
| Saturday | 97°F | Mostly Sunny | 5 to 8 mph SW | 6% |
| Saturday Night | 71°F | Partly Cloudy | 5 mph S | 4% |
| Sunday | 92°F | Chance Rain Showers then Chance Showers And Thunderstorms | 2 to 8 mph NW | 27% |
| Sunday Night | 64°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 6 to 9 mph N | 62% |
| Monday | 79°F | Showers And Thunderstorms Likely | 7 to 13 mph NE | 66% |
| Monday Night | 58°F | Showers And Thunderstorms Likely | 7 to 13 mph NE | 66% |
| Tuesday | 72°F | Chance Rain Showers then Mostly Cloudy | 13 mph N | 25% |
| Tuesday Night | 52°F | Mostly Cloudy | 5 to 13 mph N | 5% |
| Wednesday | 75°F | Mostly Sunny | 7 to 10 mph N | 3% |
| Wednesday Night | 54°F | Partly Cloudy | 2 to 9 mph N | 2% |
| Thursday | 76°F | Mostly Sunny | 3 to 8 mph N | 4% |
| Thursday Night | 56°F | Partly Cloudy | 2 to 8 mph NE | 3% |
Forecast source: National Weather Service (api.weather.gov) for Prairietown (38.966, -89.923). Updated through the day.
Growing snapshot for Prairietown
Last spring frost
Apr 4
First fall frost
Nov 5
Growing season
214 days
Hardiness zone
6b
More local growing data for Prairietown: nearby ZIP 62021 weather · frost dates · planting calendar · Illinois frost dates
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Climate data from the nearest NOAA station, Alton - Melvin Price L&D, Il (12.3 mi from Prairietown). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 18, 2026.