National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Fair and Breezy

28°F

-2°C

Humidity 72%
Wind Speed NW 22 G 30 mph
Barometer 29.78 in
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill14°F (-10°C)
Last update 16 Mar 8:55 am CDT
Extended Forecast for

Grinnell IA

  • Today

    Today: Sunny, with a high near 46. Windy, with a north northwest wind 15 to 21 mph, with gusts as high as 30 mph.

    High: 46 °F

    Sunny and
    Windy

  • Tonight

    Tonight: Increasing clouds, with a low around 31. West northwest wind 5 to 13 mph becoming south southeast after midnight. Winds could gust as high as 20 mph.

    Low: 31 °F

    Increasing
    Clouds

  • Monday

    Monday: Sunny, with a high near 73. Windy, with a south wind 14 to 21 mph, with gusts as high as 30 mph.

    High: 73 °F

    Sunny and
    Windy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 45. South wind 10 to 13 mph, with gusts as high as 20 mph.

    Low: 45 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 74. Breezy, with a south southeast wind 10 to 17 mph, with gusts as high as 25 mph.

    High: 74 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: A slight chance of rain and thunderstorms before 1am, then rain and possibly a thunderstorm between 1am and 4am, then rain after 4am. Low around 34. Breezy. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 34 °F

    Slight Chance
    T-storms then
    Rain and
    Breezy

  • Wednesday

    Wednesday: Rain and snow. High near 40. Windy. Chance of precipitation is 90%.

    High: 40 °F

    Rain/Snow and
    Windy

  • Wednesday Night

    Wednesday Night: A 30 percent chance of snow, mainly before 1am. Partly cloudy, with a low around 24. Windy.

    Low: 24 °F

    Chance Snow
    and Windy

  • Thursday

    Thursday: Sunny, with a high near 46.

    High: 46 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 46. Windy, with a north northwest wind 15 to 21 mph, with gusts as high as 30 mph.
Tonight
Increasing clouds, with a low around 31. West northwest wind 5 to 13 mph becoming south southeast after midnight. Winds could gust as high as 20 mph.
Monday
Sunny, with a high near 73. Windy, with a south wind 14 to 21 mph, with gusts as high as 30 mph.
Monday Night
Partly cloudy, with a low around 45. South wind 10 to 13 mph, with gusts as high as 20 mph.
Tuesday
Mostly sunny, with a high near 74. Breezy, with a south southeast wind 10 to 17 mph, with gusts as high as 25 mph.
Tuesday Night
A slight chance of rain and thunderstorms before 1am, then rain and possibly a thunderstorm between 1am and 4am, then rain after 4am. Low around 34. Breezy. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
Rain and snow. High near 40. Windy. Chance of precipitation is 90%.
Wednesday Night
A 30 percent chance of snow, mainly before 1am. Partly cloudy, with a low around 24. Windy.
Thursday
Sunny, with a high near 46.
Thursday Night
Partly cloudy, with a low around 31.
Friday
Partly sunny, with a high near 54. Breezy.
Friday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 34.
Saturday
Mostly sunny, with a high near 56.
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ABOUT THIS FORECAST

 
Point Forecast:
Grinnell IA
 41.75°N 92.69°W
Last Update:
6:18 am CDT Mar 16, 2025
Forecast Valid:
9am CDT Mar 16, 2025-6pm CDT Mar 22, 2025
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation