National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Unsettled Weather in the Eastern U.S. through Memorial Day

Showers and thunderstorms are expected from Texas to the Northeast through Tuesday. Heavy rain will create mainly localized areas of flash flooding across the central Gulf Coast into the Appalachians. Elevated to Critical fire weather conditions due to gusty winds and low humidity are expected through Tuesday across Oregon and Nevada. Showers and thunderstorms will develop over the Northwest. Read More >

Hazardous Weather Conditions

Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Fair

67°F

19°C

Humidity 65%
Wind Speed Calm
Barometer 30.02 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 25 May 11:15 pm CDT
Extended Forecast for

Grinnell IA

  • Tonight

    Tonight: Clear, with a low around 59. East southeast wind around 7 mph becoming south after midnight.

    Low: 59 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 86. South wind 5 to 7 mph.

    High: 86 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 58. Light south wind.

    Low: 58 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 86. Calm wind becoming east around 5 mph in the afternoon.

    High: 86 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 60. East northeast wind 3 to 6 mph.

    Low: 60 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 80.

    High: 80 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 57.

    Low: 57 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Clear, with a low around 59. East southeast wind around 7 mph becoming south after midnight.
Tuesday
Sunny, with a high near 86. South wind 5 to 7 mph.
Tuesday Night
Partly cloudy, with a low around 58. Light south wind.
Wednesday
Sunny, with a high near 86. Calm wind becoming east around 5 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 60. East northeast wind 3 to 6 mph.
Thursday
Mostly sunny, with a high near 84.
Thursday Night
Partly cloudy, with a low around 58.
Friday
Partly sunny, with a high near 80.
Friday Night
Mostly cloudy, with a low around 57.
Saturday
Mostly sunny, with a high near 78.
Saturday Night
Partly cloudy, with a low around 54.
Sunday
Mostly sunny, with a high near 79.
Sunday Night
Mostly clear, with a low around 54.
Monday
Sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grinnell IA
 41.75°N 92.72°W
Last Update:
10:36 pm CDT May 25, 2026
Forecast Valid:
11pm CDT May 25, 2026-6pm CDT Jun 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