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.

Partly Cloudy

56°F

13°C

Humidity 36%
Wind Speed W 18 G 22 mph
Barometer 30.25 in
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Last update 5 Apr 5:55 pm CDT
Extended Forecast for

Grinnell IA

  • Tonight

    Tonight: Isolated showers and thunderstorms between 10pm and 11pm. Increasing clouds, with a low around 32. North northwest wind 8 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

    Low: 32 °F

    Isolated
    T-storms then
    Mostly Clear

  • Monday

    Monday: Partly sunny, with a high near 46. North northwest wind 10 to 13 mph, with gusts as high as 20 mph.

    High: 46 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 25. North northwest wind 7 to 10 mph becoming northeast after midnight.

    Low: 25 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A chance of rain and snow showers after 1pm. Mostly cloudy, with a high near 39. Southeast wind 6 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    High: 39 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: A chance of rain and snow showers before 10pm, then a chance of rain showers. Mostly cloudy, with a low around 34. Breezy, with a southeast wind 13 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

    Low: 34 °F

    Chance
    Rain/Snow
    then Chance
    Showers and
    Breezy

  • Wednesday

    Wednesday: A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 67. Windy. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 67 °F

    Chance
    Showers and
    Windy

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 45. Breezy. Chance of precipitation is 70%.

    Low: 45 °F

    Showers
    Likely and
    Breezy

  • Thursday

    Thursday: A 50 percent chance of showers. Partly sunny, with a high near 61.

    High: 61 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 39.

    Low: 39 °F

    Chance
    Showers

Detailed Forecast

Tonight
Isolated showers and thunderstorms between 10pm and 11pm. Increasing clouds, with a low around 32. North northwest wind 8 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Monday
Partly sunny, with a high near 46. North northwest wind 10 to 13 mph, with gusts as high as 20 mph.
Monday Night
Mostly cloudy, with a low around 25. North northwest wind 7 to 10 mph becoming northeast after midnight.
Tuesday
A chance of rain and snow showers after 1pm. Mostly cloudy, with a high near 39. Southeast wind 6 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Tuesday Night
A chance of rain and snow showers before 10pm, then a chance of rain showers. Mostly cloudy, with a low around 34. Breezy, with a southeast wind 13 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.
Wednesday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 67. Windy. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 45. Breezy. Chance of precipitation is 70%.
Thursday
A 50 percent chance of showers. Partly sunny, with a high near 61.
Thursday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 39.
Friday
A 40 percent chance of showers. Partly sunny, with a high near 59.
Friday Night
Showers likely. Mostly cloudy, with a low around 45. Chance of precipitation is 60%.
Saturday
Showers likely. Mostly cloudy, with a high near 63. Chance of precipitation is 60%.
Saturday Night
Showers likely. Mostly cloudy, with a low around 53. Chance of precipitation is 60%.
Sunday
Showers likely. Mostly cloudy, with a high near 72. Breezy. Chance of precipitation is 70%.
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ABOUT THIS FORECAST

 
Point Forecast:
Grinnell IA
 41.75°N 92.69°W
Last Update:
1:51 pm CDT Apr 5, 2026
Forecast Valid:
6pm CDT Apr 5, 2026-6pm CDT Apr 12, 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