De Witt, IL Weather & Growing Conditions
Overnight
69°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms before 4am. Mostly cloudy, with a low around 69. Southeast wind around 8 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 69°F | Slight Chance Showers And Thunderstorms | 8 mph SE | 16% |
| Saturday | 87°F | Chance Showers And Thunderstorms | 8 mph SSE | 35% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms | 8 mph SSW | 32% |
| Sunday | 79°F | Chance Showers And Thunderstorms | 6 to 16 mph N | 68% |
| Sunday Night | 58°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 15 to 18 mph NE | 62% |
| Monday | 67°F | Showers And Thunderstorms Likely | 17 to 21 mph ENE | 68% |
| Monday Night | 53°F | Chance Rain Showers | 15 to 21 mph NE | 51% |
| Tuesday | 65°F | Chance Showers And Thunderstorms | 18 mph NE | 26% |
| Tuesday Night | 51°F | Chance Showers And Thunderstorms then Mostly Cloudy | 10 to 18 mph NNE | 26% |
| Wednesday | 68°F | Mostly Sunny | 12 to 15 mph NNE | 3% |
| Wednesday Night | 52°F | Partly Cloudy | 7 to 15 mph NNE | 3% |
| Thursday | 70°F | Mostly Sunny | 8 to 13 mph NNE | 3% |
| Thursday Night | 53°F | Partly Cloudy | 7 to 12 mph NNE | 3% |
| Friday | 73°F | Mostly Sunny | 8 to 12 mph NE | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for De Witt, IL
Last spring frost
Apr 21
First fall frost
Oct 20
Growing season
181 days
Hardiness zone
6a
Explore more for De Witt, IL: full frost dates · planting calendar · Illinois frost dates
Climate data from the nearest NOAA station, Bloomington 5W, Il (24.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.