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.
This Afternoon
84°F
Slight Chance Rain Showers
A slight chance of rain showers after 4pm. Cloudy, with a high near 84. South wind around 7 mph. Chance of precipitation is 20%.
7-day forecast for De Witt
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 84°F | Slight Chance Rain Showers | 7 mph S | 19% |
| Tonight | 68°F | Mostly Cloudy | 6 mph SSW | 13% |
| Sunday | 80°F | Chance Rain Showers then Chance Showers And Thunderstorms | 5 to 14 mph NNE | 35% |
| Sunday Night | 59°F | Chance Showers And Thunderstorms | 10 to 15 mph NE | 47% |
| Monday | 68°F | Rain Showers Likely | 10 to 18 mph ENE | 65% |
| Monday Night | 54°F | Chance Rain Showers | 14 to 18 mph ENE | 48% |
| Tuesday | 65°F | Chance Rain Showers | 17 mph NE | 48% |
| Tuesday Night | 52°F | Mostly Cloudy | 9 to 17 mph NNE | 11% |
| Wednesday | 67°F | Partly Sunny | 10 to 14 mph NNE | 6% |
| Wednesday Night | 53°F | Partly Cloudy | 6 to 14 mph NNE | 0% |
| Thursday | 71°F | Partly Sunny | 7 to 10 mph NNE | 1% |
| Thursday Night | 55°F | Mostly Cloudy | 5 to 10 mph NNE | 6% |
| Friday | 74°F | Partly Sunny | 6 to 10 mph NE | 8% |
| Friday Night | 54°F | Partly Cloudy | 6 to 9 mph NE | 8% |
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.