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.

Heavy Rain

51°F

11°C

Humidity 82%
Wind Speed E 10 mph
Barometer 29.83 in
Dewpoint 46°F (8°C)
Visibility 7.00 mi
Wind Chill47°F (8°C)
Last update 3 Apr 10:15 pm CDT
Extended Forecast for

Grinnell IA

  • Tonight

    Tonight: Showers and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms between midnight and 1am. Low around 36. Breezy, with a south wind 9 to 17 mph becoming west after midnight. Winds could gust as high as 29 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 36 °F

    Showers then
    Chance
    T-storms and
    Breezy

  • Saturday

    Saturday: 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

    Mostly Cloudy
    and Windy

  • 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. Northwest wind around 9 mph.

    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: A slight chance of snow showers before 1pm, then a slight chance of rain and snow showers. Mostly cloudy, with a high near 45. Chance of precipitation is 20%.

    High: 45 °F

    Slight Chance
    Snow Showers
    then Slight
    Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 36. Breezy.

    Low: 36 °F

    Chance
    Showers and
    Breezy

Detailed Forecast

Tonight
Showers and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms between midnight and 1am. Low around 36. Breezy, with a south wind 9 to 17 mph becoming west after midnight. Winds could gust as high as 29 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
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. Northwest wind around 9 mph.
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
A slight chance of snow showers before 1pm, then a slight chance of rain and snow showers. Mostly cloudy, with a high near 45. Chance of precipitation is 20%.
Tuesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 36. Breezy.
Wednesday
A 30 percent chance of showers after 1pm. 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.
Thursday Night
Showers likely. Mostly cloudy, with a low around 43. Chance of precipitation is 60%.
Friday
Showers likely. Mostly cloudy, with a high near 58. Chance of precipitation is 70%.
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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:
9:42 pm CDT Apr 3, 2026
Forecast Valid:
10pm CDT Apr 3, 2026-6pm CDT Apr 10, 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