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

18°F

-8°C

Humidity 45%
Wind Speed Calm
Barometer 30.20 in
Dewpoint 0°F (-18°C)
Visibility 10.00 mi
Last update 17 Mar 12:55 pm CDT
Extended Forecast for

Deep River IA

  • This Afternoon

    This Afternoon: A 10 percent chance of snow after 5pm. Mostly cloudy, with a high near 24. Wind chill values as low as 10. South wind 8 to 11 mph.

    High: 24 °F

    Slight Chance
    Snow

  • Tonight

    Tonight: Snow, mainly before midnight. Steady temperature around 24. South southeast wind 6 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    Low: 24 °F

    Snow then
    Slight Chance
    Snow

  • Wednesday

    Wednesday: Mostly sunny, with a high near 48. Light and variable wind becoming west around 6 mph in the afternoon.

    High: 48 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 33. South wind 3 to 6 mph.

    Low: 33 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 61. West wind 6 to 8 mph becoming north in the afternoon.

    High: 61 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 40.

    Low: 40 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 69.

    High: 69 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 43.

    Low: 43 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

Detailed Forecast

This Afternoon
A 10 percent chance of snow after 5pm. Mostly cloudy, with a high near 24. Wind chill values as low as 10. South wind 8 to 11 mph.
Tonight
Snow, mainly before midnight. Steady temperature around 24. South southeast wind 6 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Wednesday
Mostly sunny, with a high near 48. Light and variable wind becoming west around 6 mph in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 33. South wind 3 to 6 mph.
Thursday
Mostly sunny, with a high near 61. West wind 6 to 8 mph becoming north in the afternoon.
Thursday Night
Partly cloudy, with a low around 40.
Friday
Mostly sunny, with a high near 69.
Friday Night
Partly cloudy, with a low around 43.
Saturday
Sunny, with a high near 72.
Saturday Night
Mostly clear, with a low around 43.
Sunday
Partly sunny, with a high near 59. Breezy.
Sunday Night
Partly cloudy, with a low around 30.
Monday
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 92.37°W
Last Update:
11:17 am CDT Mar 17, 2026
Forecast Valid:
1pm CDT Mar 17, 2026-6pm CDT Mar 23, 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