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.

Fog/Mist

47°F

8°C

Humidity 94%
Wind Speed Calm
Barometer 29.86 in
Dewpoint 46°F (8°C)
Visibility 3.00 mi
Last update 24 Nov 8:55 pm CST
Extended Forecast for

Grinnell IA

  • Tonight

    Tonight: A 30 percent chance of rain, mainly before midnight. Widespread dense fog, mainly after 3am. Otherwise, cloudy, with a low around 45. Calm wind. New precipitation amounts of less than a tenth of an inch possible.

    Low: 45 °F

    Chance Rain
    and Dense Fog

  • Tuesday

    Tuesday: A chance of rain between noon and 3pm. Widespread dense fog, mainly before 9am. Otherwise, mostly cloudy, with a high near 52. Breezy, with a light and variable wind becoming west 12 to 17 mph in the morning. Winds could gust as high as 31 mph. Chance of precipitation is 30%.

    High: 52 °F

    Dense Fog
    then Chance
    Rain and
    Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 28. Windy, with a west northwest wind 17 to 24 mph, with gusts as high as 38 mph.

    Low: 28 °F

    Mostly Cloudy
    and Windy

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 36. Windy, with a west northwest wind 15 to 24 mph, with gusts as high as 37 mph.

    High: 36 °F

    Decreasing
    Clouds and
    Windy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 20. West northwest wind 9 to 11 mph, with gusts as high as 21 mph.

    Low: 20 °F

    Mostly Clear

  • Thanksgiving Day

    Thanksgiving Day: Sunny, with a high near 33.

    High: 33 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 16.

    Low: 16 °F

    Mostly Clear

  • Friday

    Friday: A 30 percent chance of snow after noon. Partly sunny, with a high near 30.

    High: 30 °F

    Partly Sunny
    then Chance
    Snow

  • Friday Night

    Friday Night: Snow. Low around 23. Chance of precipitation is 80%.

    Low: 23 °F

    Snow

Detailed Forecast

Tonight
A 30 percent chance of rain, mainly before midnight. Widespread dense fog, mainly after 3am. Otherwise, cloudy, with a low around 45. Calm wind. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
A chance of rain between noon and 3pm. Widespread dense fog, mainly before 9am. Otherwise, mostly cloudy, with a high near 52. Breezy, with a light and variable wind becoming west 12 to 17 mph in the morning. Winds could gust as high as 31 mph. Chance of precipitation is 30%.
Tuesday Night
Mostly cloudy, with a low around 28. Windy, with a west northwest wind 17 to 24 mph, with gusts as high as 38 mph.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 36. Windy, with a west northwest wind 15 to 24 mph, with gusts as high as 37 mph.
Wednesday Night
Mostly clear, with a low around 20. West northwest wind 9 to 11 mph, with gusts as high as 21 mph.
Thanksgiving Day
Sunny, with a high near 33.
Thursday Night
Mostly clear, with a low around 16.
Friday
A 30 percent chance of snow after noon. Partly sunny, with a high near 30.
Friday Night
Snow. Low around 23. Chance of precipitation is 80%.
Saturday
A 40 percent chance of snow. Mostly cloudy, with a high near 32.
Saturday Night
A 40 percent chance of snow. Cloudy, with a low around 22.
Sunday
A 40 percent chance of snow. Mostly cloudy, with a high near 31.
Sunday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 17.
Monday
A 30 percent chance of snow. Partly sunny, with a high near 31.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grinnell IA
 41.75°N 92.72°W
Last Update:
7:36 pm CST Nov 24, 2025
Forecast Valid:
9pm CST Nov 24, 2025-6pm CST Dec 1, 2025
 
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Additional Resources

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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