Colwell, IA Weather & Growing Conditions
Tonight
62°F
Showers And Thunderstorms Likely then Showers And Thunderstorms
Showers and thunderstorms likely before midnight, then showers and thunderstorms. Some of the storms could produce heavy rain. Cloudy, with a low around 62. Southeast wind 10 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 62°F | Showers And Thunderstorms Likely then Showers And Thunderstorms | 10 to 14 mph SE | 80% |
| Saturday | 70°F | Showers And Thunderstorms Likely | 7 to 12 mph SW | 62% |
| Saturday Night | 57°F | Chance Showers And Thunderstorms | 13 mph N | 28% |
| Sunday | 65°F | Slight Chance Rain Showers then Mostly Cloudy | 16 mph NE | 19% |
| Sunday Night | 52°F | Mostly Cloudy then Slight Chance Rain Showers | 14 mph E | 20% |
| Monday | 60°F | Chance Rain Showers | 15 mph NE | 46% |
| Monday Night | 46°F | Chance Rain Showers | 9 to 13 mph NE | 46% |
| Tuesday | 59°F | Slight Chance Rain Showers then Partly Sunny | 10 mph E | 18% |
| Tuesday Night | 44°F | Partly Cloudy | 6 mph E | 3% |
| Wednesday | 64°F | Sunny | 6 mph E | 0% |
| Wednesday Night | 48°F | Partly Cloudy | 3 mph SE | 5% |
| Thursday | 66°F | Partly Sunny | 5 mph SE | 14% |
| Thursday Night | 51°F | Partly Cloudy | 3 mph SE | 10% |
| Friday | 67°F | Mostly Sunny | 2 to 6 mph E | 6% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Colwell, IA
Last spring frost
Apr 30
First fall frost
Oct 6
Growing season
157 days
Hardiness zone
5a
Explore more for Colwell, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Charles City, Ia (7.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.