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

Hazardous Weather Conditions

Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Overcast

46°F

8°C

Humidity 53%
Wind Speed NW 20 G 24 mph
Barometer 29.81 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 17 Apr 10:15 pm CDT
Extended Forecast for

Grinnell IA

  • Tonight

    Tonight: Isolated showers and thunderstorms before 11pm. Mostly cloudy, with a low around 35. Breezy, with a northwest wind 14 to 18 mph, with gusts as high as 32 mph. Chance of precipitation is 10%.

    Low: 35 °F

    Breezy.
    Isolated
    T-storms then
    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 50. Breezy, with a west northwest wind 14 to 18 mph, with gusts as high as 28 mph.

    High: 50 °F

    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 32. West southwest wind 5 to 11 mph, with gusts as high as 22 mph.

    Low: 32 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 55. West wind 6 to 14 mph becoming north northwest in the afternoon. Winds could gust as high as 22 mph.

    High: 55 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 31. North wind around 6 mph becoming east southeast after midnight.

    Low: 31 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 49.

    Low: 49 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 49.

    Low: 49 °F

    Clear

Detailed Forecast

Tonight
Isolated showers and thunderstorms before 11pm. Mostly cloudy, with a low around 35. Breezy, with a northwest wind 14 to 18 mph, with gusts as high as 32 mph. Chance of precipitation is 10%.
Saturday
Sunny, with a high near 50. Breezy, with a west northwest wind 14 to 18 mph, with gusts as high as 28 mph.
Saturday Night
Mostly clear, with a low around 32. West southwest wind 5 to 11 mph, with gusts as high as 22 mph.
Sunday
Mostly sunny, with a high near 55. West wind 6 to 14 mph becoming north northwest in the afternoon. Winds could gust as high as 22 mph.
Sunday Night
Mostly clear, with a low around 31. North wind around 6 mph becoming east southeast after midnight.
Monday
Sunny, with a high near 63.
Monday Night
Partly cloudy, with a low around 49.
Tuesday
Sunny, with a high near 75.
Tuesday Night
Clear, with a low around 49.
Wednesday
Sunny, with a high near 78.
Wednesday Night
Partly cloudy, with a low around 57.
Thursday
A 30 percent chance of showers. Partly sunny, with a high near 76. Windy.
Thursday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 56. Breezy. Chance of precipitation is 60%.
Friday
A 50 percent chance of showers. Partly sunny, with a high near 68. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grinnell IA
 41.75°N 92.69°W
Last Update:
10:17 pm CDT Apr 17, 2026
Forecast Valid:
10pm CDT Apr 17, 2026-6pm CDT Apr 24, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation