De Witt, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for De Witt, a village in De Witt County, Illinois.
Overnight
68°F
Mostly Cloudy
Mostly cloudy, with a low around 68. Southeast wind around 9 mph, with gusts as high as 16 mph.
7-day forecast for De Witt
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 68°F | Mostly Cloudy | 9 mph SE | 4% |
| Saturday | 87°F | Slight Chance Showers And Thunderstorms | 9 mph S | 22% |
| Saturday Night | 68°F | Slight Chance Showers And Thunderstorms | 8 mph S | 28% |
| Sunday | 81°F | Showers And Thunderstorms Likely | 6 to 16 mph NNE | 61% |
| Sunday Night | 59°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 14 to 18 mph NE | 62% |
| Monday | 68°F | Showers And Thunderstorms Likely | 18 mph NE | 66% |
| Monday Night | 54°F | Showers And Thunderstorms Likely | 15 to 20 mph NE | 56% |
| Tuesday | 66°F | Chance Rain Showers | 17 mph NE | 33% |
| Tuesday Night | 52°F | Mostly Cloudy | 9 to 17 mph NNE | 8% |
| Wednesday | 69°F | Partly Sunny | 10 to 14 mph NNE | 3% |
| Wednesday Night | 53°F | Partly Cloudy | 6 to 14 mph NNE | 3% |
| Thursday | 70°F | Mostly Sunny | 7 to 12 mph NNE | 3% |
| Thursday Night | 54°F | Partly Cloudy | 6 to 12 mph NNE | 4% |
| Friday | 72°F | Mostly Sunny | 7 to 12 mph NNE | 4% |
Forecast source: National Weather Service (api.weather.gov) for De Witt (40.185, -88.785). Updated through the day.
Growing snapshot for De Witt
Last spring frost
Apr 21
First fall frost
Oct 20
Growing season
181 days
Hardiness zone
6a
More local growing data for De Witt: nearby ZIP 61735 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Bloomington 5W, Il (24.4 mi from De Witt). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.