7-Day Zone Forecast for Grundy County (Text-Only)
NWS Forecast for: Grundy County
Issued by: National Weather Service Des Moines, IA
Last Update: 123 AM CDT Wed Jun 10 2026




Rest Of Tonight: Mostly cloudy. Near steady temperature in the mid 70s. South winds 10 to 15 mph with gusts up to 25 mph.

Wednesday: Partly sunny with a chance of showers and thunderstorms. Breezy with highs in the upper 80s. Southwest winds 15 to 25 mph with gusts up to 35 mph. Chance of rain 50 percent.

Wednesday Night: Partly cloudy with a chance of showers and thunderstorms in the evening, then mostly clear with a slight chance of showers after midnight. Lows in the lower 60s. West winds 15 to 20 mph with gusts up to 30 mph, becoming southeast around 5 mph after midnight. Chance of rain 40 percent.

Thursday: Showers with a chance of thunderstorms. Highs in the upper 70s. Southeast winds 5 to 10 mph, increasing to northwest 15 to 20 mph in the afternoon. Chance of rain near 100 percent.

Thursday Night: Mostly clear. Less humid with lows in the mid 50s. West winds 10 to 15 mph.

Friday: Sunny. Highs in the lower 80s.

Friday Night: Mostly clear. Lows in the upper 50s.

Saturday: Mostly sunny. Showers likely with a chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 60 percent.

Saturday Night: Mostly cloudy with a chance of showers with a slight chance of thunderstorms in the evening, then partly cloudy with a slight chance of showers after midnight. Lows in the upper 50s. Chance of rain 50 percent.

Sunday: Sunny. Highs in the mid 70s.

Sunday Night: Mostly cloudy. Lows in the lower 50s.

Monday: Mostly sunny. A slight chance of showers in the morning. Highs in the lower 70s. Chance of rain 20 percent.

Monday Night: Partly cloudy. Lows in the lower 50s.

Tuesday: Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the mid 70s. Chance of rain 20 percent.







Zone Forecast: Grundy County

Visit your local NWS office at: https://www.weather.gov/desmoines