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Grimes, IA 7-Day Night Weather Forecast
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Grimes, IA Weather Forecast
Grimes, IA Weather Forecast Date: 954 AM CDT Mon Sep 14 2026
The area/counties/county of: Polk, including the city of Des Moines.or toggle through each period.
Rest of Today... Mostly cloudy with a chance of thunderstorms. Showers late this morning, then a chance of showers this afternoon. Some thunderstorms May produce heavy rainfall. Not as cool with highs in the upper 70s. Southeast winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 90%.
Tonight... Showers likely with a chance of thunderstorms in the evening, then showers with a chance of thunderstorms after midnight. Some thunderstorms May produce heavy rainfall in the evening. Locally heavy rainfall possible. More humid with lows in the upper 60s. South winds 15 to 20 mph, becoming southwest 10 to 15 mph after midnight. Chance of rain 90%.
Tuesday... Mostly cloudy. Showers with a chance of thunderstorms in the morning, then a chance of showers in the afternoon. Humid with highs in the lower 70s. Northwest winds 5 to 10 mph. Chance of rain 90%.
Tuesday Night... Mostly cloudy. A chance of showers with a slight chance of thunderstorms after midnight. Lows in the upper 50s. Northeast winds 5 to 10 mph. Chance of rain 50%.
Wednesday... A slight chance of thunderstorms. Showers. Highs in the lower 70s. East winds 5 to 10 mph. Chance of rain 90%.
Wednesday Night... A chance of thunderstorms. Showers. Lows in the mid 60s. Chance of rain 90%.
Thursday... Showers likely with a slight chance of thunderstorms in the morning, then a slight chance of showers in the afternoon. Highs in the upper 70s. Chance of rain 60%.
Thursday Night... Mostly cloudy. A slight chance of showers in the evening, then a chance of showers and thunderstorms after midnight. Lows in the mid 60s. Chance of rain 50%.
Friday... Showers likely with a chance of thunderstorms in the morning, then partly sunny with a chance of showers with a slight chance of thunderstorms in the afternoon. Highs around 80. Chance of rain 70%.
Friday Night... Partly cloudy in the evening, then becoming mostly cloudy. A slight chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Lows in the mid 60s. Chance of rain 70%.
Saturday... Partly sunny with a chance of showers with a slight chance of thunderstorms. Highs in the upper 70s. Chance of rain 50%.
Saturday Night... Mostly cloudy with a chance of showers and thunderstorms. Lows in the lower 60s. Chance of rain 50%.
POP = Probability of Precipitation
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