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.

Overcast

40°F

4°C

Humidity 78%
Wind Speed Calm
Barometer 30.13 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 3 Mar 6:55 pm CST
Extended Forecast for

Grinnell Regional Airport IA

  • Tonight

    Tonight: A slight chance of drizzle after 5am. Mostly cloudy, with a low around 33. Calm wind.

    Low: 33 °F

    Mostly Cloudy
    then Slight
    Chance
    Drizzle

  • Wednesday

    Wednesday: A chance of drizzle, mainly after 4pm. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 49. Light east northeast wind.

    High: 49 °F

    Chance
    Drizzle and
    Patchy Fog

  • Wednesday Night

    Wednesday Night: Showers likely, mainly after midnight. Patchy dense fog after 8pm. Otherwise, cloudy, with a low around 39. Calm wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 39 °F

    Showers
    Likely and
    Patchy Dense
    Fog

  • Thursday

    Thursday: A 20 percent chance of showers before noon. Areas of fog before 10am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 60. Calm wind.

    High: 60 °F

    Slight Chance
    Showers and
    Areas Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 45. Light southeast wind becoming south southeast 6 to 11 mph after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 45 °F

    Mostly Clear
    then Showers
    Likely

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 69. Breezy. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 69 °F

    Breezy.
    Showers then
    Showers
    Likely

  • Friday Night

    Friday Night: Rain and possibly a thunderstorm before midnight, then a chance of rain. Low around 38. Chance of precipitation is 80%.

    Low: 38 °F

    Rain then
    Chance Rain

  • Saturday

    Saturday: Mostly sunny, with a high near 53.

    High: 53 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

Detailed Forecast

Tonight
A slight chance of drizzle after 5am. Mostly cloudy, with a low around 33. Calm wind.
Wednesday
A chance of drizzle, mainly after 4pm. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 49. Light east northeast wind.
Wednesday Night
Showers likely, mainly after midnight. Patchy dense fog after 8pm. Otherwise, cloudy, with a low around 39. Calm wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
A 20 percent chance of showers before noon. Areas of fog before 10am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 60. Calm wind.
Thursday Night
Showers likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 45. Light southeast wind becoming south southeast 6 to 11 mph after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Friday
Showers and possibly a thunderstorm. High near 69. Breezy. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
Rain and possibly a thunderstorm before midnight, then a chance of rain. Low around 38. Chance of precipitation is 80%.
Saturday
Mostly sunny, with a high near 53.
Saturday Night
Mostly clear, with a low around 36.
Sunday
Sunny, with a high near 62.
Sunday Night
Mostly clear, with a low around 39.
Monday
Sunny, with a high near 67.
Monday Night
Partly cloudy, with a low around 47.
Tuesday
A 40 percent chance of rain. Partly sunny, with a high near 65. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grinnell Regional Airport IA
 41.71°N 92.75°W
Last Update:
5:26 pm CST Mar 3, 2026
Forecast Valid:
7pm CST Mar 3, 2026-6pm CDT Mar 10, 2026
 
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Additional Resources

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Chance of Precipitation