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 and Breezy

48°F

9°C

Humidity 36%
Wind Speed S 22 G 32 mph
Barometer 29.80 in
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 12 Mar 5:35 pm CDT
Extended Forecast for

Grinnell IA

High Wind Warning March 12, 10:00pm until March 13, 10:00am
Click here for hazard details and duration
High Wind Warning

  • Tonight

    Tonight: Showers likely, mainly before 11pm. Cloudy, then gradually becoming partly cloudy, with a low around 32. Windy, with a south wind 25 to 32 mph becoming west after midnight. Winds could gust as high as 50 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 32 °F

    Showers
    Likely and
    Windy

  • Friday

    Friday: Mostly sunny, with a high near 45. Windy, with a west northwest wind 24 to 29 mph decreasing to 16 to 21 mph in the afternoon. Winds could gust as high as 44 mph.

    High: 45 °F

    Mostly Sunny
    and Windy

  • Friday Night

    Friday Night: A 30 percent chance of snow, mainly after 1am. Increasing clouds, with a low around 29. Northwest wind 5 to 7 mph becoming calm. Little or no snow accumulation expected.

    Low: 29 °F

    Chance Snow

  • Saturday

    Saturday: Mostly cloudy, with a high near 46. East southeast wind 6 to 13 mph, with gusts as high as 20 mph.

    High: 46 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A slight chance of rain and snow before 10pm, then rain likely between 10pm and 4am, then rain likely, possibly mixed with snow after 4am. Some thunder is also possible. Cloudy, with a low around 35. Breezy, with an east wind 13 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

    Low: 35 °F

    Slight Chance
    Rain/Snow
    then
    Rain/Snow
    Likely and
    Breezy

  • Sunday

    Sunday: Rain likely, possibly mixed with snow showers before 7am, then rain showers between 7am and 1pm, then snow showers, possibly mixed with rain after 1pm. The snow could be heavy at times. Some thunder is also possible. High near 44. Windy. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 44 °F

    Rain/Snow and
    Windy

  • Sunday Night

    Sunday Night: Snow showers before 7pm, then a chance of snow, mainly between 7pm and 1am. The snow could be heavy at times. Low around 7. Very windy. Chance of precipitation is 80%.

    Low: 7 °F

    Heavy Snow
    and Very
    Windy then
    Chance Snow
    and Windy

  • Monday

    Monday: Mostly sunny, with a high near 15. Windy.

    High: 15 °F

    Mostly Sunny
    and Windy

  • Monday Night

    Monday Night: Mostly clear, with a low around 1. Windy.

    Low: 1 °F

    Mostly Clear
    and Windy
    then Mostly
    Clear

Detailed Forecast

Tonight
Showers likely, mainly before 11pm. Cloudy, then gradually becoming partly cloudy, with a low around 32. Windy, with a south wind 25 to 32 mph becoming west after midnight. Winds could gust as high as 50 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Mostly sunny, with a high near 45. Windy, with a west northwest wind 24 to 29 mph decreasing to 16 to 21 mph in the afternoon. Winds could gust as high as 44 mph.
Friday Night
A 30 percent chance of snow, mainly after 1am. Increasing clouds, with a low around 29. Northwest wind 5 to 7 mph becoming calm. Little or no snow accumulation expected.
Saturday
Mostly cloudy, with a high near 46. East southeast wind 6 to 13 mph, with gusts as high as 20 mph.
Saturday Night
A slight chance of rain and snow before 10pm, then rain likely between 10pm and 4am, then rain likely, possibly mixed with snow after 4am. Some thunder is also possible. Cloudy, with a low around 35. Breezy, with an east wind 13 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Sunday
Rain likely, possibly mixed with snow showers before 7am, then rain showers between 7am and 1pm, then snow showers, possibly mixed with rain after 1pm. The snow could be heavy at times. Some thunder is also possible. High near 44. Windy. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Sunday Night
Snow showers before 7pm, then a chance of snow, mainly between 7pm and 1am. The snow could be heavy at times. Low around 7. Very windy. Chance of precipitation is 80%.
Monday
Mostly sunny, with a high near 15. Windy.
Monday Night
Mostly clear, with a low around 1. Windy.
Tuesday
Partly sunny, with a high near 24.
Tuesday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 16.
Wednesday
Mostly sunny, with a high near 40.
Wednesday Night
Mostly cloudy, with a low around 27.
Thursday
Mostly sunny, with a high near 53.
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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:
2:46 pm CDT Mar 12, 2026
Forecast Valid:
5pm CDT Mar 12, 2026-6pm CDT Mar 19, 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