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

28°F

-2°C

Humidity 77%
Wind Speed E 10 mph
Barometer 30.35 in
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 2 Mar 12:15 am CST
Extended Forecast for

Grinnell IA

  • Overnight

    Overnight: Partly cloudy, with a low around 24. North northeast wind around 6 mph becoming east.

    Low: 24 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 42. Southeast wind around 7 mph.

    High: 42 °F

    Partly Sunny

  • Monday Night

    Monday Night: A chance of drizzle, mainly after 2am. Mostly cloudy, with a low around 34. Southeast wind around 6 mph.

    Low: 34 °F

    Mostly Cloudy
    then Chance
    Drizzle

  • Tuesday

    Tuesday: A chance of drizzle before noon, then a chance of rain after noon. Mostly cloudy, with a high near 44. East northeast wind around 6 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    High: 44 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: A 40 percent chance of rain. Partly cloudy, with a low around 34. East northeast wind around 7 mph. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 34 °F

    Chance Rain

  • Wednesday

    Wednesday: A 50 percent chance of rain. Partly sunny, with a high near 47. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 47 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: Rain likely, mainly after midnight. Mostly cloudy, with a low around 38. Chance of precipitation is 60%.

    Low: 38 °F

    Rain Likely

  • Thursday

    Thursday: A 30 percent chance of rain before noon. Partly sunny, with a high near 57.

    High: 57 °F

    Chance Rain
    then Partly
    Sunny

  • Thursday Night

    Thursday Night: A 50 percent chance of rain after midnight. Mostly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy
    then Chance
    Rain

Detailed Forecast

Overnight
Partly cloudy, with a low around 24. North northeast wind around 6 mph becoming east.
Monday
Partly sunny, with a high near 42. Southeast wind around 7 mph.
Monday Night
A chance of drizzle, mainly after 2am. Mostly cloudy, with a low around 34. Southeast wind around 6 mph.
Tuesday
A chance of drizzle before noon, then a chance of rain after noon. Mostly cloudy, with a high near 44. East northeast wind around 6 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
A 40 percent chance of rain. Partly cloudy, with a low around 34. East northeast wind around 7 mph. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
A 50 percent chance of rain. Partly sunny, with a high near 47. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain likely, mainly after midnight. Mostly cloudy, with a low around 38. Chance of precipitation is 60%.
Thursday
A 30 percent chance of rain before noon. Partly sunny, with a high near 57.
Thursday Night
A 50 percent chance of rain after midnight. Mostly cloudy, with a low around 43.
Friday
Rain. High near 64. Chance of precipitation is 90%.
Friday Night
Rain likely. Mostly cloudy, with a low around 36. Chance of precipitation is 60%.
Saturday
Partly sunny, with a high near 53.
Saturday Night
Mostly clear, with a low around 35.
Sunday
Sunny, with a high near 61.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grinnell IA
 41.75°N 92.72°W
Last Update:
12:27 am CST Mar 2, 2026
Forecast Valid:
12am CST Mar 2, 2026-6pm CDT Mar 8, 2026
 
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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