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.

Fair

35°F

2°C

Humidity 65%
Wind Speed NW 17 mph
Barometer 29.92 in
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 18 Apr 4:35 am CDT
Extended Forecast for

Grinnell IA

  • Today

    Today: Sunny, with a high near 50. Windy, with a west northwest wind 14 to 22 mph, with gusts as high as 30 mph.

    High: 50 °F

    Sunny and
    Windy

  • Tonight

    Tonight: Mostly clear, with a low around 32. West southwest wind 5 to 15 mph, with gusts as high as 24 mph.

    Low: 32 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 54. West wind 6 to 14 mph becoming north northwest in the afternoon. Winds could gust as high as 22 mph.

    High: 54 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 30. North wind 5 to 8 mph becoming light and variable after midnight.

    Low: 30 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 62. South southeast wind 5 to 15 mph, with gusts as high as 22 mph.

    High: 62 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 50.

    Low: 50 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 50. Windy, with a west northwest wind 14 to 22 mph, with gusts as high as 30 mph.
Tonight
Mostly clear, with a low around 32. West southwest wind 5 to 15 mph, with gusts as high as 24 mph.
Sunday
Mostly sunny, with a high near 54. West wind 6 to 14 mph becoming north northwest in the afternoon. Winds could gust as high as 22 mph.
Sunday Night
Clear, with a low around 30. North wind 5 to 8 mph becoming light and variable after midnight.
Monday
Sunny, with a high near 62. South southeast wind 5 to 15 mph, with gusts as high as 22 mph.
Monday Night
Partly cloudy, with a low around 48.
Tuesday
Sunny, with a high near 77.
Tuesday Night
Clear, with a low around 50.
Wednesday
Sunny, with a high near 79.
Wednesday Night
Mostly clear, with a low around 58.
Thursday
A 40 percent chance of showers. Partly sunny, with a high near 77. Windy.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 53. Breezy. Chance of precipitation is 70%.
Friday
A 40 percent chance of showers. Partly sunny, with a high near 65. 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:
2:32 am CDT Apr 18, 2026
Forecast Valid:
4am CDT Apr 18, 2026-6pm CDT Apr 24, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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