Dumont, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Dumont, a city in Butler County, Iowa.
Today
76°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Partly sunny. High near 76, with temperatures falling to around 74 in the afternoon. Northwest wind around 8 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Dumont
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 76°F | Chance Showers And Thunderstorms | 8 mph NW | 50% |
| Tonight | 58°F | Showers And Thunderstorms Likely | 3 to 8 mph NNW | 58% |
| Wednesday | 73°F | Slight Chance Showers And Thunderstorms then Partly Sunny | 5 mph NNE | 16% |
| Wednesday Night | 53°F | Mostly Clear | 2 mph N | 3% |
| Thursday | 79°F | Sunny | 2 mph SSE | 1% |
| Thursday Night | 59°F | Mostly Clear | 3 mph S | 1% |
| Friday | 82°F | Sunny | 2 to 9 mph S | 9% |
| Friday Night | 64°F | Mostly Clear | 7 mph S | 14% |
| Saturday | 85°F | Sunny | 3 to 9 mph S | 13% |
| Saturday Night | 68°F | Mostly Clear then Slight Chance Showers And Thunderstorms | 10 mph SE | 23% |
| Sunday | 85°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 9 mph SSE | 23% |
| Sunday Night | 67°F | Slight Chance Showers And Thunderstorms | 7 mph SSE | 33% |
| Monday | 84°F | Chance Showers And Thunderstorms | 9 mph SSE | 33% |
| Monday Night | 68°F | Slight Chance Showers And Thunderstorms | 6 to 10 mph ENE | 36% |
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 Aug 4, 2026.