7-Day Forecast Summary
7-Day Detailed Weather Forecast for Grinnell
Tonight |
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Temperature: 54°F Wind Speed: 6 to 9 mph Wind Direction: NNW Forecast: Showers and thunderstorms likely before 1am. Mostly cloudy. Low around 54, with temperatures rising to around 56 overnight. North northwest wind 6 to 9 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible. |
Sunday |
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Temperature: 72°F Wind Speed: 9 to 15 mph Wind Direction: NW Forecast: Sunny, with a high near 72. Northwest wind 9 to 15 mph, with gusts as high as 23 mph. |
Sunday Night |
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Temperature: 51°F Wind Speed: 2 to 9 mph Wind Direction: WNW Forecast: Mostly clear. Low around 51, with temperatures rising to around 53 overnight. West northwest wind 2 to 9 mph. |
Monday |
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Temperature: 77°F Wind Speed: 3 to 9 mph Wind Direction: W Forecast: Sunny, with a high near 77. West wind 3 to 9 mph. |
Monday Night |
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Temperature: 55°F Wind Speed: 5 to 8 mph Wind Direction: WSW Forecast: A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 55. West southwest wind 5 to 8 mph. Chance of precipitation is 20%. |
Tuesday |
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Temperature: 77°F Wind Speed: 8 to 13 mph Wind Direction: W Forecast: A slight chance of showers and thunderstorms before 7am. Sunny, with a high near 77. Chance of precipitation is 20%. |
Tuesday Night |
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Temperature: 55°F Wind Speed: 2 to 7 mph Wind Direction: SW Forecast: A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 55. Chance of precipitation is 30%. |
Wednesday |
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Temperature: 81°F Wind Speed: 7 to 16 mph Wind Direction: S Forecast: A chance of showers and thunderstorms before 7am, then showers and thunderstorms. Partly sunny, with a high near 81. Chance of precipitation is 80%. |
Wednesday Night |
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Temperature: 57°F Wind Speed: 12 to 15 mph Wind Direction: WNW Forecast: Showers and thunderstorms before 1am. Mostly cloudy, with a low around 57. Chance of precipitation is 80%. |
Thursday |
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Temperature: 76°F Wind Speed: 9 to 13 mph Wind Direction: NW Forecast: Mostly sunny, with a high near 76. |
Thursday Night |
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Temperature: 53°F Wind Speed: 2 to 7 mph Wind Direction: WNW Forecast: Mostly clear, with a low around 53. |
Juneteenth |
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Temperature: 81°F Wind Speed: 3 to 7 mph Wind Direction: W Forecast: Sunny, with a high near 81. |
Friday Night |
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Temperature: 59°F Wind Speed: 6 mph Wind Direction: SSW Forecast: A slight chance of showers and thunderstorms after 1am. Mostly clear, with a low around 59. |
Saturday |
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Temperature: 83°F Wind Speed: 7 mph Wind Direction: SW Forecast: A slight chance of showers and thunderstorms. Mostly sunny, with a high near 83. |

