National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Fair

70°F

21°C

Humidity 27%
Wind Speed Calm
Barometer 29.65 in
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 9 Mar 3:35 pm CDT
Extended Forecast for

5 Miles WSW Chelsea IA

  • This Afternoon

    This Afternoon: Sunny, with a high near 71. West southwest wind around 7 mph.

    High: 71 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 41. Light and variable wind.

    Low: 41 °F

    Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 66. East northeast wind 5 to 9 mph.

    High: 66 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers, mainly after 1am. Increasing clouds, with a low around 35. North northeast wind 10 to 14 mph, with gusts as high as 22 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 35 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A 30 percent chance of rain before 1pm. Mostly cloudy, with a high near 45. Breezy, with a north northwest wind 15 to 20 mph, with gusts as high as 28 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 45 °F

    Chance Rain
    and Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 25.

    Low: 25 °F

    Mostly Clear

  • Thursday

    Thursday: Partly sunny, with a high near 53. Breezy.

    High: 53 °F

    Mostly Sunny
    then Mostly
    Cloudy and
    Breezy

  • Thursday Night

    Thursday Night: A chance of rain before 1am, then a slight chance of rain and snow. Mostly cloudy, with a low around 34. Breezy. Chance of precipitation is 40%.

    Low: 34 °F

    Breezy.
    Chance Rain
    then Chance
    Rain/Snow

  • Friday

    Friday: Partly sunny, with a high near 48.

    High: 48 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 71. West southwest wind around 7 mph.
Tonight
Clear, with a low around 41. Light and variable wind.
Tuesday
Mostly sunny, with a high near 66. East northeast wind 5 to 9 mph.
Tuesday Night
A 40 percent chance of showers, mainly after 1am. Increasing clouds, with a low around 35. North northeast wind 10 to 14 mph, with gusts as high as 22 mph. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
A 30 percent chance of rain before 1pm. Mostly cloudy, with a high near 45. Breezy, with a north northwest wind 15 to 20 mph, with gusts as high as 28 mph. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Mostly clear, with a low around 25.
Thursday
Partly sunny, with a high near 53. Breezy.
Thursday Night
A chance of rain before 1am, then a slight chance of rain and snow. Mostly cloudy, with a low around 34. Breezy. Chance of precipitation is 40%.
Friday
Partly sunny, with a high near 48.
Friday Night
Mostly cloudy, with a low around 31.
Saturday
Mostly cloudy, with a high near 53.
Saturday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 32.
Sunday
A chance of rain and snow. Mostly cloudy, with a high near 41. Windy. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WSW Chelsea IA
 41.9°N 92.48°W
Last Update:
1:46 pm CDT Mar 9, 2026
Forecast Valid:
3pm CDT Mar 9, 2026-6pm CDT Mar 15, 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