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

17°F

-8°C

Humidity 66%
Wind Speed Calm
Barometer 30.57 in
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Last update 23 Feb 12:35 pm CST
Extended Forecast for

Deep River IA

  • This Afternoon

    This Afternoon: Sunny, with a high near 23. North northwest wind 3 to 7 mph.

    High: 23 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 12. Wind chill values as low as zero. Light and variable wind becoming south 8 to 13 mph in the evening. Winds could gust as high as 22 mph.

    Low: 12 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 42. Wind chill values as low as 5. Breezy, with a south wind 13 to 16 mph becoming west in the afternoon. Winds could gust as high as 26 mph.

    High: 42 °F

    Mostly Cloudy
    then Mostly
    Cloudy and
    Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 17. Wind chill values as low as 10. Northwest wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 17 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: A 30 percent chance of snow after noon. Mostly sunny, with a high near 34. Northwest wind around 7 mph becoming northeast in the afternoon. Little or no snow accumulation expected.

    High: 34 °F

    Sunny then
    Chance Snow

  • Wednesday Night

    Wednesday Night: Snow likely, mainly before midnight. Mostly cloudy, with a low around 20. Chance of precipitation is 60%.

    Low: 20 °F

    Snow Likely

  • Thursday

    Thursday: Mostly sunny, with a high near 37.

    High: 37 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 23.

    Low: 23 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 54.

    High: 54 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 23. North northwest wind 3 to 7 mph.
Tonight
Partly cloudy, with a low around 12. Wind chill values as low as zero. Light and variable wind becoming south 8 to 13 mph in the evening. Winds could gust as high as 22 mph.
Tuesday
Mostly cloudy, with a high near 42. Wind chill values as low as 5. Breezy, with a south wind 13 to 16 mph becoming west in the afternoon. Winds could gust as high as 26 mph.
Tuesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 17. Wind chill values as low as 10. Northwest wind 8 to 10 mph, with gusts as high as 20 mph.
Wednesday
A 30 percent chance of snow after noon. Mostly sunny, with a high near 34. Northwest wind around 7 mph becoming northeast in the afternoon. Little or no snow accumulation expected.
Wednesday Night
Snow likely, mainly before midnight. Mostly cloudy, with a low around 20. Chance of precipitation is 60%.
Thursday
Mostly sunny, with a high near 37.
Thursday Night
Mostly clear, with a low around 23.
Friday
Sunny, with a high near 54.
Friday Night
Mostly clear, with a low around 26.
Saturday
Mostly sunny, with a high near 43.
Saturday Night
Partly cloudy, with a low around 19.
Sunday
A 30 percent chance of snow. Partly sunny, with a high near 35.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Deep River IA
 41.57°N 92.37°W
Last Update:
10:51 am CST Feb 23, 2026
Forecast Valid:
12pm CST Feb 23, 2026-6pm CST Mar 1, 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