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.

Overcast

45°F

7°C

Humidity 78%
Wind Speed E 15 mph
Barometer 29.94 in
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 3 Apr 2:55 pm CDT
Extended Forecast for

Grinnell IA

  • This Afternoon

    This Afternoon: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4pm. Cloudy, with a high near 56. East southeast wind around 14 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 56 °F

    Showers
    Likely

  • Tonight

    Tonight: Showers and possibly a thunderstorm before 11pm, then a chance of showers and thunderstorms between 11pm and 1am. Low around 36. Breezy, with an east southeast wind 11 to 16 mph becoming west after midnight. Winds could gust as high as 29 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 36 °F

    Showers then
    Chance
    T-storms and
    Breezy

  • Saturday

    Saturday: A 20 percent chance of showers after 2pm. Mostly cloudy, with a high near 46. Windy, with a west wind 18 to 23 mph, with gusts as high as 32 mph.

    High: 46 °F

    Windy. Cloudy
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 31. Blustery, with a west northwest wind 11 to 20 mph, with gusts as high as 31 mph.

    Low: 31 °F

    Partly Cloudy
    and Blustery
    then Partly
    Cloudy

  • Sunday

    Sunday: Sunny, with a high near 55. West northwest wind 10 to 14 mph, with gusts as high as 21 mph.

    High: 55 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 31.

    Low: 31 °F

    Mostly Clear

  • Monday

    Monday: Partly sunny, with a high near 47.

    High: 47 °F

    Partly Sunny

  • Monday Night

    Monday Night: A 20 percent chance of snow showers after 1am. Mostly cloudy, with a low around 25.

    Low: 25 °F

    Mostly Cloudy
    then Slight
    Chance Snow
    Showers

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 45.

    High: 45 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4pm. Cloudy, with a high near 56. East southeast wind around 14 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and possibly a thunderstorm before 11pm, then a chance of showers and thunderstorms between 11pm and 1am. Low around 36. Breezy, with an east southeast wind 11 to 16 mph becoming west after midnight. Winds could gust as high as 29 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
A 20 percent chance of showers after 2pm. Mostly cloudy, with a high near 46. Windy, with a west wind 18 to 23 mph, with gusts as high as 32 mph.
Saturday Night
Partly cloudy, with a low around 31. Blustery, with a west northwest wind 11 to 20 mph, with gusts as high as 31 mph.
Sunday
Sunny, with a high near 55. West northwest wind 10 to 14 mph, with gusts as high as 21 mph.
Sunday Night
Mostly clear, with a low around 31.
Monday
Partly sunny, with a high near 47.
Monday Night
A 20 percent chance of snow showers after 1am. Mostly cloudy, with a low around 25.
Tuesday
Mostly cloudy, with a high near 45.
Tuesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 36. Breezy.
Wednesday
A 30 percent chance of showers. Partly sunny, with a high near 68. Windy.
Wednesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 43. Windy.
Thursday
A 50 percent chance of showers. Mostly cloudy, with a high near 61. 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:
2:21 pm CDT Apr 3, 2026
Forecast Valid:
3pm CDT Apr 3, 2026-6pm CDT Apr 9, 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