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

18°F

-8°C

Humidity 74%
Wind Speed Calm
Barometer 30.63 in
Dewpoint 11°F (-12°C)
Visibility 10.00 mi
Last update 28 Mar 7:35 am CDT
Extended Forecast for

3 Miles NNW Hartwick 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 light and variable wind becoming south southwest 17 to 22 mph in the morning. Winds could gust as high as 30 mph.

    High: 56 °F

    Sunny then
    Sunny and
    Windy

  • Tonight

    Tonight: Partly cloudy, with a low around 37. Breezy, with a south wind 10 to 16 mph, with gusts as high as 26 mph.

    Low: 37 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Sunday

    Sunday: Sunny, with a high near 68. South southwest wind 10 to 15 mph, with gusts as high as 24 mph.

    High: 68 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 45. South wind 6 to 8 mph.

    Low: 45 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 81. South wind 6 to 15 mph, with gusts as high as 22 mph.

    High: 81 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A 40 percent chance of showers. Partly cloudy, with a low around 57. Breezy. New precipitation amounts of less than a tenth of an inch possible.

    Low: 57 °F

    Chance
    Showers and
    Breezy

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 70. Breezy. Chance of precipitation is 50%.

    High: 70 °F

    Chance
    Showers and
    Breezy

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 32. Breezy.

    Low: 32 °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 light and variable wind becoming south southwest 17 to 22 mph in the morning. Winds could gust as high as 30 mph.
Tonight
Partly cloudy, with a low around 37. Breezy, with a south wind 10 to 16 mph, with gusts as high as 26 mph.
Sunday
Sunny, with a high near 68. South southwest wind 10 to 15 mph, with gusts as high as 24 mph.
Sunday Night
Mostly clear, with a low around 45. South wind 6 to 8 mph.
Monday
Mostly sunny, with a high near 81. South wind 6 to 15 mph, with gusts as high as 22 mph.
Monday Night
A 40 percent chance of showers. Partly cloudy, with a low around 57. Breezy. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 70. Breezy. Chance of precipitation is 50%.
Tuesday Night
A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 32. Breezy.
Wednesday
Mostly sunny, with a high near 51.
Wednesday Night
A chance of rain and snow showers after 1am. Partly cloudy, with a low around 30. Chance of precipitation is 30%.
Thursday
A 30 percent chance of showers. Mostly sunny, with a high near 51. Breezy.
Thursday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 35.
Friday
A 30 percent chance of showers. Mostly cloudy, with a high near 59.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNW Hartwick IA
 41.81°N 92.37°W
Last Update:
6:31 am CDT Mar 28, 2026
Forecast Valid:
7am 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