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

44°F

7°C

Humidity 87%
Wind Speed Calm
Barometer 29.95 in
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Last update 14 Nov 7:55 am CST
Extended Forecast for

Deep River IA

  • Today

    Today: Sunny, with a high near 73. South southwest wind 6 to 11 mph, with gusts as high as 20 mph.

    High: 73 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 54. Southwest wind 8 to 14 mph, with gusts as high as 23 mph.

    Low: 54 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 67. West southwest wind 11 to 15 mph becoming north northwest in the afternoon. Winds could gust as high as 22 mph.

    High: 67 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 33. North northwest wind 5 to 11 mph, with gusts as high as 20 mph.

    Low: 33 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 52. Northwest wind 5 to 7 mph.

    High: 52 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 34.

    Low: 34 °F

    Partly Cloudy

  • Monday

    Monday: A 30 percent chance of rain after noon. Partly sunny, with a high near 49.

    High: 49 °F

    Partly Sunny
    then Chance
    Rain

  • Monday Night

    Monday Night: Rain likely, possibly mixed with snow before midnight, then a chance of rain. Mostly cloudy, with a low around 31. Chance of precipitation is 60%.

    Low: 31 °F

    Rain/Snow
    Likely then
    Chance Rain

  • Tuesday

    Tuesday: Mostly sunny, with a high near 45.

    High: 45 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 73. South southwest wind 6 to 11 mph, with gusts as high as 20 mph.
Tonight
Increasing clouds, with a low around 54. Southwest wind 8 to 14 mph, with gusts as high as 23 mph.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 67. West southwest wind 11 to 15 mph becoming north northwest in the afternoon. Winds could gust as high as 22 mph.
Saturday Night
Mostly clear, with a low around 33. North northwest wind 5 to 11 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 52. Northwest wind 5 to 7 mph.
Sunday Night
Partly cloudy, with a low around 34.
Monday
A 30 percent chance of rain after noon. Partly sunny, with a high near 49.
Monday Night
Rain likely, possibly mixed with snow before midnight, then a chance of rain. Mostly cloudy, with a low around 31. Chance of precipitation is 60%.
Tuesday
Mostly sunny, with a high near 45.
Tuesday Night
Mostly cloudy, with a low around 28.
Wednesday
Partly sunny, with a high near 46.
Wednesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 34.
Thursday
A 50 percent chance of rain. Partly sunny, with a high near 47.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Deep River IA
 41.57°N 92.34°W
Last Update:
6:47 am CST Nov 14, 2025
Forecast Valid:
8am CST Nov 14, 2025-6pm CST Nov 20, 2025
 
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