DeWitt, IA Weather & Growing Conditions
Today
81°F
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
Showers and thunderstorms likely before 11am, then a chance of showers and thunderstorms between 11am and 1pm, then a chance of showers and thunderstorms. Some of the storms could produce heavy rain. Mostly cloudy, with a high near 81. South wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 81°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 10 mph S | 56% |
| Tonight | 63°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 to 10 mph NW | 83% |
| Sunday | 69°F | Rain Showers Likely | 10 mph NE | 69% |
| Sunday Night | 56°F | Chance Rain Showers | 10 to 15 mph NE | 39% |
| Monday | 64°F | Chance Rain Showers | 10 mph NE | 53% |
| Monday Night | 51°F | Chance Rain Showers | 10 mph NE | 43% |
| Tuesday | 63°F | Slight Chance Rain Showers | 10 mph NE | 20% |
| Tuesday Night | 48°F | Partly Cloudy | 5 to 10 mph NE | 6% |
| Wednesday | 67°F | Mostly Sunny | 5 mph NE | 2% |
| Wednesday Night | 51°F | Partly Cloudy | 0 to 5 mph NE | 1% |
| Thursday | 68°F | Mostly Sunny | 5 mph NE | 6% |
| Thursday Night | 52°F | Partly Cloudy | 0 to 5 mph NE | 6% |
| Friday | 71°F | Mostly Sunny | 0 to 5 mph NE | 4% |
| Friday Night | 53°F | Partly Cloudy | 0 to 5 mph E | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for DeWitt, IA
Last spring frost
Apr 22
First fall frost
Oct 16
Growing season
175 days
Hardiness zone
5b
Explore more for DeWitt, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Clinton #1, Ia (13.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.