Grinnell, IA Weather Forecast
Poweshiek County, Iowa
Live radar, warnings and storm tracking for Grinnell, with free alerts the moment it counts.
The next few hours
Taller, warmer bars mean heavier rain. Dotted means no reading for that hour.
Hour by hour
Sunrise and sunset
Next five days, scored 0 to 100The first day or two use the HRRR and NBM cloud layers. Later days only have total cloud, so treat them as a rough guide.
Know when sunset at this place will be worth a photo
We score every sunrise and sunset here from the cloud, haze and smoke forecast, and let you know when one is likely to light up. Sunrise the evening before, sunset a few hours ahead.
Seven-day outlook
Free alerts for Grinnell
Every NWS warning, pushed to your phone, inbox or webhook the moment it is issued.
Grinnell, IA at a glance
Grinnell is home to about 9,473 people in Poweshiek County, across 5.7 square miles. It ranks 44th by population of 139 places in Iowa with a forecast here. The nearest neighbour with its own forecast is Newton, 16 miles away.
- County
- Poweshiek County
- Population
- 9,473 2023 est.
- Land area
- 5.7 sq mi
- People per sq mi
- 1,665
- Forecast point
- 41.7352°N, 92.7249°W
How well can the network see Grinnell?
The nearest Doppler radar is KDMX (Des Moines, IA), to the W. Its lowest scan passes about 3,700 ft above Grinnell. Close enough to see rotation in the low part of a storm, where tornadoes form.
The closest weather station is KGGI (Grinnell Rgnl). Close enough that its readings are the conditions in town.
Forecasts near Grinnell
- Newton, IA16 mi
- Tama, IA18 mi
- Marshalltown, IA23 mi
- Pella, IA25 mi
- Oskaloosa, IA31 mi
- Mitchellville, IA33 mi
- Knoxville, IA35 mi
- Williamsburg, IA37 mi
Elsewhere in Iowa
Des MoinesCedar RapidsDavenportSioux CityIowa CityAnkenyAll Iowa forecasts →