Dumont, IA Weather & Growing Conditions
Overnight
64°F
Patchy Fog
Patchy fog and showers and thunderstorms. Cloudy. Low around 64, with temperatures rising to around 67 overnight. Southeast wind around 8 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 64°F | Patchy Fog | 8 mph SE | 77% |
| Saturday | 76°F | Patchy Fog | 5 to 8 mph W | 53% |
| Saturday Night | 58°F | Chance Showers And Thunderstorms | 10 mph N | 30% |
| Sunday | 66°F | Chance Rain Showers | 10 to 14 mph NE | 30% |
| Sunday Night | 52°F | Chance Rain Showers | 8 to 13 mph ENE | 26% |
| Monday | 60°F | Chance Rain Showers | 13 mph ENE | 52% |
| Monday Night | 47°F | Chance Rain Showers | 6 to 10 mph ENE | 50% |
| Tuesday | 60°F | Slight Chance Rain Showers then Partly Sunny | 8 mph ENE | 22% |
| Tuesday Night | 45°F | Partly Cloudy | 1 to 5 mph ENE | 3% |
| Wednesday | 64°F | Mostly Sunny | 3 mph E | 1% |
| Wednesday Night | 48°F | Partly Cloudy | 2 mph SE | 5% |
| Thursday | 67°F | Slight Chance Rain Showers | 2 mph SE | 15% |
| Thursday Night | 51°F | Mostly Cloudy | 1 mph SE | 10% |
| Friday | 67°F | Mostly Sunny | 3 mph ESE | 7% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Dumont, IA
Last spring frost
Apr 27
First fall frost
Oct 8
Growing season
165 days
Hardiness zone
5a
Explore more for Dumont, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Allison, Ia (9.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.