Harman US

Calumet, IA Weather & Growing Conditions

Overnight
62°F
Widespread Fog
Widespread fog and a chance of showers and thunderstorms. Cloudy. Low around 62, with temperatures rising to around 66 overnight. North northwest wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
Overnight 62°F Widespread Fog 5 mph NNW 32%
Saturday 69°F Widespread Fog then Cloudy 5 to 10 mph N 40%
Saturday Night 56°F Slight Chance Rain Showers then Cloudy 10 to 15 mph NNE 16%
Sunday 65°F Cloudy then Slight Chance Rain Showers 15 mph NE 19%
Sunday Night 52°F Rain Showers Likely 10 to 15 mph ENE 57%
Monday 59°F Rain Showers Likely 10 mph ENE 57%
Monday Night 46°F Chance Rain Showers then Mostly Cloudy 5 to 10 mph ENE 43%
Tuesday 61°F Partly Sunny 5 to 10 mph E 7%
Tuesday Night 43°F Partly Cloudy 5 mph ESE 2%
Wednesday 64°F Mostly Sunny 5 to 10 mph SE 2%
Wednesday Night 49°F Partly Cloudy then Slight Chance Rain Showers 5 mph SE 22%
Thursday 67°F Slight Chance Rain Showers 5 to 10 mph SE 22%
Thursday Night 53°F Mostly Cloudy 5 mph SE 14%
Friday 69°F Partly Sunny 5 to 10 mph SE 14%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Calumet, IA

Last spring frost
Apr 29
First fall frost
Oct 10
Growing season
163 days
Hardiness zone
5a

Explore more for Calumet, IA: full frost dates · planting calendar · Iowa frost dates

Climate data from the nearest NOAA station, Primghar, Ia (10.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.