Dumont, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dumont, a city in Butler County, Iowa.
Today
50°F
Chance Rain Showers
A chance of rain showers. Cloudy. High near 50, with temperatures falling to around 48 in the afternoon. West wind 12 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Dumont
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 50°F | Chance Rain Showers | 12 to 16 mph W | 41% |
| Tonight | 42°F | Chance Rain Showers | 9 to 13 mph W | 52% |
| Thursday | 51°F | Chance Rain Showers then Cloudy | 13 mph NW | 53% |
| Thursday Night | 35°F | Mostly Cloudy | 5 to 9 mph N | 10% |
| Friday | 47°F | Mostly Sunny | 2 to 6 mph N | 1% |
| Friday Night | 27°F | Partly Cloudy | 1 mph N | 0% |
| Saturday | 50°F | Mostly Sunny | 0 to 3 mph W | 0% |
| Saturday Night | 33°F | Mostly Clear | 3 mph W | 2% |
| Sunday | 56°F | Sunny | 6 mph W | 2% |
| Sunday Night | 35°F | Clear | 2 mph SW | 0% |
| Monday | 61°F | Sunny | 2 to 8 mph SW | 0% |
| Monday Night | 38°F | Mostly Clear | 5 mph W | 0% |
| Tuesday | 60°F | Mostly Sunny | 2 mph NW | 0% |
| Tuesday Night | 39°F | Partly Cloudy | 1 mph SE | 1% |
Forecast source: National Weather Service (api.weather.gov) for Dumont (42.752, -92.974). Updated through the day.
Growing snapshot for Dumont
Last spring frost
Apr 27
First fall frost
Oct 8
Growing season
165 days
Hardiness zone
5a
More local growing data for Dumont: nearby ZIP 50625 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Allison, Ia (9.5 mi from Dumont). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.