| NWS Forecast for: Grundy County Issued by: National Weather Service Des Moines, IA Last Update: 203 AM CDT Sun Aug 2 2026 | |
| Rest Of Tonight: Mostly clear. Near steady temperature in the lower 60s. North winds around 5 mph. Sunday: Mostly sunny. Humid with highs in the lower 80s. Northeast winds 5 to 10 mph. Sunday Night: Partly cloudy in the evening, then becoming mostly clear. Lows around 60. East winds around 5 mph. Monday: Mostly sunny. Highs in the lower 80s. Southeast winds 5 to 10 mph. Monday Night: Mostly clear. Humid with lows in the lower 60s. South winds 5 to 10 mph. Tuesday: Partly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 20 percent. Tuesday Night: A chance of thunderstorms. Showers. Lows around 60. Chance of rain 80 percent. Wednesday: Becoming partly sunny in the afternoon. A chance of thunderstorms. Showers likely, mainly in the morning. Highs in the mid 70s. Chance of rain 60 percent. Wednesday Night: Mostly cloudy in the evening, then becoming partly cloudy. A 50 percent chance of showers. Lows in the upper 50s. Thursday: Mostly sunny. Highs in the upper 70s. Thursday Night: Mostly clear in the evening, then becoming partly cloudy. Lows around 60. Friday: Mostly sunny. Highs in the lower 80s. Friday Night: Mostly clear in the evening, then partly cloudy with a slight chance of showers and thunderstorms after midnight. Lows in the mid 60s. Chance of rain 20 percent. Saturday: Mostly sunny. Highs in the mid 80s. | |
| Zone Forecast: Grundy County | |
Visit your local NWS office at: https://www.weather.gov/desmoines |