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.

Fair

33°F

1°C

Humidity 52%
Wind Speed Calm
Barometer 30.42 in
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Last update 7 Apr 3:55 am CDT
Extended Forecast for

Grinnell IA

  • Today

    Today: A slight chance of snow showers between 2pm and 3pm, then a slight chance of rain showers after 3pm. Mostly cloudy, with a high near 43. East northeast wind 8 to 14 mph becoming southeast in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 20%.

    High: 43 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Tonight

    Tonight: A chance of showers before 1am, then a chance of showers after 2am. Mostly cloudy, with a low around 36. Breezy, with a southeast wind 14 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 36 °F

    Chance
    Showers and
    Breezy

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 4pm. Partly sunny, with a high near 68. Windy, with a south wind 21 to 28 mph, with gusts as high as 37 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 68 °F

    Windy. Slight
    Chance
    Showers then
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 41. West wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 41 °F

    Showers
    Likely

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 4pm. Mostly sunny, with a high near 62. Northwest wind around 6 mph becoming east in the afternoon. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 62 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm. Low around 42. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 42 °F

    Showers

  • Friday

    Friday: Partly sunny, with a high near 58.

    High: 58 °F

    Partly Sunny

  • Friday Night

    Friday Night: A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 41.

    Low: 41 °F

    Chance
    Showers

  • Saturday

    Saturday: A 40 percent chance of showers. Mostly cloudy, with a high near 63.

    High: 63 °F

    Chance
    Showers

Detailed Forecast

Today
A slight chance of snow showers between 2pm and 3pm, then a slight chance of rain showers after 3pm. Mostly cloudy, with a high near 43. East northeast wind 8 to 14 mph becoming southeast in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 20%.
Tonight
A chance of showers before 1am, then a chance of showers after 2am. Mostly cloudy, with a low around 36. Breezy, with a southeast wind 14 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
A chance of showers, with thunderstorms also possible after 4pm. Partly sunny, with a high near 68. Windy, with a south wind 21 to 28 mph, with gusts as high as 37 mph. Chance of precipitation is 50%. 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. Mostly cloudy, with a low around 41. West wind 5 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of showers, with thunderstorms also possible after 4pm. Mostly sunny, with a high near 62. Northwest wind around 6 mph becoming east in the afternoon. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers and possibly a thunderstorm. Low around 42. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Friday
Partly sunny, with a high near 58.
Friday Night
A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 41.
Saturday
A 40 percent chance of showers. Mostly cloudy, with a high near 63.
Saturday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 54.
Sunday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 71. Windy. Chance of precipitation is 70%.
Sunday Night
Showers likely. Mostly cloudy, with a low around 59. Breezy. Chance of precipitation is 60%.
Monday
A 40 percent chance of showers. Mostly sunny, with a high near 76. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
Grinnell IA
 41.75°N 92.69°W
Last Update:
3:52 am CDT Apr 7, 2026
Forecast Valid:
4am CDT Apr 7, 2026-6pm CDT Apr 13, 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