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.

Fair

24°F

-4°C

Humidity 67%
Wind Speed Calm
Barometer 30.63 in
Dewpoint 15°F (-9°C)
Visibility 10.00 mi
Last update 28 Mar 8:35 am CDT
Extended Forecast for

Deep River IA

Red Flag Warning March 28, 10:00am until March 28, 09:00pm
Click here for hazard details and duration
Red Flag Warning

  • Today

    Today: Sunny, with a high near 56. Windy, with a south wind 6 to 11 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 31 mph.

    High: 56 °F

    Sunny then
    Sunny and
    Windy

  • Tonight

    Tonight: Partly cloudy, with a low around 38. Breezy, with a south wind 11 to 17 mph, with gusts as high as 29 mph.

    Low: 38 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Sunday

    Sunday: Sunny, with a high near 69. South southwest wind 10 to 15 mph, with gusts as high as 26 mph.

    High: 69 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 47. South wind 6 to 9 mph.

    Low: 47 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 81. Breezy, with a south wind 7 to 16 mph, with gusts as high as 24 mph.

    High: 81 °F

    Sunny then
    Partly Sunny
    and Breezy

  • Monday Night

    Monday Night: A 40 percent chance of showers. Partly cloudy, with a low around 58. Breezy. New precipitation amounts of less than a tenth of an inch possible.

    Low: 58 °F

    Chance
    Showers and
    Breezy

  • Tuesday

    Tuesday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 72. Breezy. Chance of precipitation is 60%.

    High: 72 °F

    Showers
    Likely and
    Breezy

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 33. Breezy.

    Low: 33 °F

    Chance
    Showers and
    Breezy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 56. Windy, with a south wind 6 to 11 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 31 mph.
Tonight
Partly cloudy, with a low around 38. Breezy, with a south wind 11 to 17 mph, with gusts as high as 29 mph.
Sunday
Sunny, with a high near 69. South southwest wind 10 to 15 mph, with gusts as high as 26 mph.
Sunday Night
Mostly clear, with a low around 47. South wind 6 to 9 mph.
Monday
Mostly sunny, with a high near 81. Breezy, with a south wind 7 to 16 mph, with gusts as high as 24 mph.
Monday Night
A 40 percent chance of showers. Partly cloudy, with a low around 58. Breezy. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 72. Breezy. Chance of precipitation is 60%.
Tuesday Night
A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 33. Breezy.
Wednesday
Mostly sunny, with a high near 51.
Wednesday Night
A 30 percent chance of showers after 1am. Partly cloudy, with a low around 30.
Thursday
A 40 percent chance of showers. Partly sunny, with a high near 51. Breezy.
Thursday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 36. Breezy.
Friday
A 30 percent chance of showers. Mostly cloudy, with a high near 60.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Deep River IA
 41.57°N 92.37°W
Last Update:
6:31 am CDT Mar 28, 2026
Forecast Valid:
8am CDT Mar 28, 2026-6pm CDT Apr 3, 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