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.

Fog

67°F

19°C

Humidity 98%
Wind Speed S 6 mph
Barometer 29.97 in
Dewpoint 67°F (19°C)
Visibility 0.25 mi
Last update 25 Jul 6:35 am CDT
Extended Forecast for

2 Miles WNW Deep River IA

Extreme Heat Watch July 26, 09:00pm until July 27, 10:00pm
Extreme Heat Warning July 26, 12:00pm until July 26, 09:00pm
Click here for hazard details and duration
Extreme Heat Watch
Extreme Heat Warning

  • Today

    Today: Patchy fog before 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 90. South southwest wind 3 to 5 mph.

    High: 90 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 70. Light south southwest wind.

    Low: 70 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 95. Heat index values as high as 107. Light southwest wind increasing to 5 to 9 mph in the morning.

    High: 95 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 75. South southwest wind 7 to 9 mph.

    Low: 75 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Monday

    Monday: Sunny, with a high near 95. Southwest wind around 10 mph, with gusts as high as 18 mph.

    High: 95 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 71.

    Low: 71 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 91.

    High: 91 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 67.

    Low: 67 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

Detailed Forecast

Today
Patchy fog before 9am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 90. South southwest wind 3 to 5 mph.
Tonight
Partly cloudy, with a low around 70. Light south southwest wind.
Sunday
Partly sunny, with a high near 95. Heat index values as high as 107. Light southwest wind increasing to 5 to 9 mph in the morning.
Sunday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 75. South southwest wind 7 to 9 mph.
Monday
Sunny, with a high near 95. Southwest wind around 10 mph, with gusts as high as 18 mph.
Monday Night
Mostly clear, with a low around 71.
Tuesday
Mostly sunny, with a high near 91.
Tuesday Night
Mostly clear, with a low around 67.
Wednesday
Sunny, with a high near 91.
Wednesday Night
Partly cloudy, with a low around 68.
Thursday
Mostly sunny, with a high near 91.
Thursday Night
Partly cloudy, with a low around 68.
Friday
Mostly sunny, with a high near 90.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Deep River IA
 41.59°N 92.4°W
Last Update:
5:56 am CDT Jul 25, 2026
Forecast Valid:
6am CDT Jul 25, 2026-6pm CDT Jul 31, 2026
 
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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