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

45°F

7°C

Humidity 73%
Wind Speed Calm
Barometer 30.01 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 4 Mar 5:35 pm CST
Extended Forecast for

4 Miles S Gilman IA

  • Tonight

    Tonight: A chance of sprinkles before midnight, then a slight chance of rain between midnight and 5am, then a chance of sprinkles after 5am. Patchy fog after 11pm. Otherwise, cloudy, with a low around 40. East southeast wind around 5 mph becoming light and variable in the evening. Chance of precipitation is 20%.

    Low: 40 °F

    Patchy Fog
    then Slight
    Chance Rain
    and Patchy
    Fog

  • Thursday

    Thursday: A chance of sprinkles before 7am. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 58. Calm wind becoming east southeast around 6 mph in the afternoon.

    High: 58 °F

    Patchy Fog
    then Partly
    Sunny

  • Thursday Night

    Thursday Night: Rain and possibly a thunderstorm after midnight. Patchy fog after 5am. Low around 45. Southeast wind 6 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 45 °F

    Partly Cloudy
    then Rain and
    Patchy Fog

  • Friday

    Friday: Rain and possibly a thunderstorm. High near 68. Breezy, with a south wind 13 to 16 mph, with gusts as high as 24 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 68 °F

    Rain then
    Rain Likely
    and Breezy

  • Friday Night

    Friday Night: Rain and possibly a thunderstorm before midnight, then a chance of rain. Low around 35. Breezy, with a south wind 14 to 16 mph becoming west northwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 35 °F

    Breezy. Rain
    then Chance
    Rain

  • Saturday

    Saturday: Mostly sunny, with a high near 47.

    High: 47 °F

    Mostly 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

Tonight
A chance of sprinkles before midnight, then a slight chance of rain between midnight and 5am, then a chance of sprinkles after 5am. Patchy fog after 11pm. Otherwise, cloudy, with a low around 40. East southeast wind around 5 mph becoming light and variable in the evening. Chance of precipitation is 20%.
Thursday
A chance of sprinkles before 7am. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 58. Calm wind becoming east southeast around 6 mph in the afternoon.
Thursday Night
Rain and possibly a thunderstorm after midnight. Patchy fog after 5am. Low around 45. Southeast wind 6 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Friday
Rain and possibly a thunderstorm. High near 68. Breezy, with a south wind 13 to 16 mph, with gusts as high as 24 mph. 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 35. Breezy, with a south wind 14 to 16 mph becoming west northwest after midnight. Winds could gust as high as 24 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.
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
A 30 percent chance of rain. Mostly clear, with a low around 45.
Tuesday
Rain likely. Partly sunny, with a high near 59. Breezy. Chance of precipitation is 60%.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 25. Blustery. Chance of precipitation is 50%.
Wednesday
A 30 percent chance of snow. Partly sunny, with a high near 37. Breezy.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Gilman IA
 41.82°N 92.78°W
Last Update:
5:17 pm CST Mar 4, 2026
Forecast Valid:
5pm CST Mar 4, 2026-6pm CDT Mar 11, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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