Thompsonville, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Thompsonville, a village in Franklin County, Illinois.
Tonight
72°F
Partly Cloudy
Partly cloudy, with a low around 72. South southeast wind around 1 mph.
7-day forecast for Thompsonville
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 72°F | Partly Cloudy | 1 mph SSE | 8% |
| Saturday | 99°F | Sunny | 2 to 9 mph SW | 2% |
| Saturday Night | 73°F | Mostly Clear | 5 mph SSW | 2% |
| Sunday | 98°F | Mostly Sunny | 3 to 9 mph W | 8% |
| Sunday Night | 70°F | Mostly Cloudy then Slight Chance Rain Showers | 6 mph N | 18% |
| Monday | 88°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 5 to 12 mph NNE | 44% |
| Monday Night | 63°F | Chance Showers And Thunderstorms | 6 to 13 mph NNE | 44% |
| Tuesday | 76°F | Slight Chance Showers And Thunderstorms | 8 to 14 mph N | 24% |
| Tuesday Night | 57°F | Mostly Cloudy | 5 to 14 mph N | 7% |
| Wednesday | 76°F | Mostly Sunny | 6 to 10 mph N | 2% |
| Wednesday Night | 56°F | Partly Cloudy | 3 to 10 mph NNE | 2% |
| Thursday | 77°F | Mostly Sunny | 3 to 10 mph NNE | 2% |
| Thursday Night | 58°F | Partly Cloudy | 3 to 8 mph NNE | 2% |
| Friday | 77°F | Mostly Sunny | 3 to 10 mph NNE | 3% |
Forecast source: National Weather Service (api.weather.gov) for Thompsonville (37.911, -88.765). Updated through the day.
Growing snapshot for Thompsonville
Last spring frost
Apr 4
First fall frost
Oct 28
Growing season
206 days
Hardiness zone
6b
More local growing data for Thompsonville: nearby ZIP 62890 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Benton
Buckner
Christopher
Ewing
Hanaford
Macedonia
Mulkeytown
North City
Orient
Royalton
Sesser
Valier
West City
West Frankfort
Zeigler
Climate data from the nearest NOAA station, Benton 2 N, Il (13.3 mi from Thompsonville). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.