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.

Mostly Cloudy

44°F

7°C

Humidity 49%
Wind Speed N 14 mph
Barometer 30.07 in
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 1 Apr 4:15 am CDT
Extended Forecast for

Grinnell IA

  • Overnight

    Overnight: A 30 percent chance of showers, mainly before 5am. Mostly cloudy, with a steady temperature around 44. North wind around 10 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 44 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers before 7am, then a chance of showers after 3pm. Mostly cloudy, with a high near 50. Breezy, with an east wind 16 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 50 °F

    Chance
    Showers and
    Breezy

  • Wednesday Night

    Wednesday Night: Showers before 10pm, then showers and possibly a thunderstorm between 10pm and 4am, then showers after 4am. Low around 39. Breezy, with an east wind 15 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

    Low: 39 °F

    Showers and
    Breezy

  • Thursday

    Thursday: Showers, with thunderstorms also possible after 7am. High near 66. Windy, with a southeast wind 16 to 24 mph becoming south southwest in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 66 °F

    Showers and
    Windy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 37. Breezy, with a west southwest wind 13 to 18 mph becoming north 5 to 10 mph after midnight. Winds could gust as high as 28 mph.

    Low: 37 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Friday

    Friday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 67. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 67 °F

    Chance
    Showers then
    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Low around 37. Chance of precipitation is 80%.

    Low: 37 °F

    T-storms then
    Showers

  • Saturday

    Saturday: A 20 percent chance of showers. Mostly cloudy, with a high near 46. Windy.

    High: 46 °F

    Slight Chance
    Showers and
    Windy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 29. Windy.

    Low: 29 °F

    Mostly Cloudy
    and Windy

Detailed Forecast

Overnight
A 30 percent chance of showers, mainly before 5am. Mostly cloudy, with a steady temperature around 44. North wind around 10 mph. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
A slight chance of showers before 7am, then a chance of showers after 3pm. Mostly cloudy, with a high near 50. Breezy, with an east wind 16 to 18 mph, with gusts as high as 26 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Showers before 10pm, then showers and possibly a thunderstorm between 10pm and 4am, then showers after 4am. Low around 39. Breezy, with an east wind 15 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Thursday
Showers, with thunderstorms also possible after 7am. High near 66. Windy, with a southeast wind 16 to 24 mph becoming south southwest in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday Night
Partly cloudy, with a low around 37. Breezy, with a west southwest wind 13 to 18 mph becoming north 5 to 10 mph after midnight. Winds could gust as high as 28 mph.
Friday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 67. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Low around 37. Chance of precipitation is 80%.
Saturday
A 20 percent chance of showers. Mostly cloudy, with a high near 46. Windy.
Saturday Night
Mostly cloudy, with a low around 29. Windy.
Sunday
Sunny, with a high near 51. Breezy.
Sunday Night
Mostly clear, with a low around 31.
Monday
Mostly sunny, with a high near 58.
Monday Night
Partly cloudy, with a low around 30.
Tuesday
Mostly sunny, with a high near 52.
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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:
3:36 am CDT Apr 1, 2026
Forecast Valid:
4am CDT Apr 1, 2026-6pm CDT Apr 7, 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