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

39°F

4°C

Humidity 86%
Wind Speed Calm
Barometer 30.00 in
Dewpoint 35°F (2°C)
Visibility 7.00 mi
Last update 5 Mar 12:35 am CST
Extended Forecast for

4 Miles S Gilman IA

  • Overnight

    Overnight: A chance of sprinkles before 2am, then a slight chance of rain between 2am and 5am, then a chance of sprinkles after 5am. Patchy fog after 1am. Otherwise, cloudy, with a low around 39. Calm wind. Chance of precipitation is 20%.

    Low: 39 °F

    Slight Chance
    Rain and
    Patchy Fog

  • Thursday

    Thursday: A chance of sprinkles before 7am. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 57. Light and variable wind.

    High: 57 °F

    Patchy Fog
    then Partly
    Sunny

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 3am. Patchy fog after 5am. Low around 44. Southeast wind 5 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 44 °F

    Partly Cloudy
    then Showers
    and Patchy
    Fog

  • Friday

    Friday: Showers and possibly a thunderstorm. Patchy fog before 9am. High near 70. Breezy, with a south southwest wind 14 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 70 °F

    Showers and
    Patchy Fog
    then Showers
    Likely and
    Breezy

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm before midnight, then rain likely after midnight. Low around 35. Breezy, with a south wind 14 to 18 mph becoming west northwest after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 35 °F

    Breezy.
    Showers then
    Rain Likely

  • Saturday

    Saturday: Mostly sunny, with a high near 47. Breezy.

    High: 47 °F

    Partly Sunny
    and Breezy
    then Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 33.

    Low: 33 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 60. Breezy.

    High: 60 °F

    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Clear, with a low around 44.

    Low: 44 °F

    Clear

Detailed Forecast

Overnight
A chance of sprinkles before 2am, then a slight chance of rain between 2am and 5am, then a chance of sprinkles after 5am. Patchy fog after 1am. Otherwise, cloudy, with a low around 39. Calm wind. Chance of precipitation is 20%.
Thursday
A chance of sprinkles before 7am. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 57. Light and variable wind.
Thursday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 3am. Patchy fog after 5am. Low around 44. Southeast wind 5 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Friday
Showers and possibly a thunderstorm. Patchy fog before 9am. High near 70. Breezy, with a south southwest wind 14 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers and possibly a thunderstorm before midnight, then rain likely after midnight. Low around 35. Breezy, with a south wind 14 to 18 mph becoming west northwest after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
Mostly sunny, with a high near 47. Breezy.
Saturday Night
Clear, with a low around 33.
Sunday
Sunny, with a high near 60. Breezy.
Sunday Night
Clear, with a low around 44.
Monday
Sunny, with a high near 69.
Monday Night
Mostly clear, with a low around 45.
Tuesday
Rain likely. Mostly sunny, with a high near 64. Breezy. Chance of precipitation is 60%.
Tuesday Night
Rain likely. Mostly cloudy, with a low around 31. Blustery. Chance of precipitation is 60%.
Wednesday
A chance of rain and snow. Partly sunny, with a high near 45. Breezy. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Gilman IA
 41.82°N 92.78°W
Last Update:
12:26 am CST Mar 5, 2026
Forecast Valid:
12am CST Mar 5, 2026-6pm CDT Mar 11, 2026
 
Forecast Discussion
 
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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