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 66°F (19°C)
Visibility 0.50 mi
Last update 25 Jul 5:55 am CDT
Extended Forecast for

Tama 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: Increasing clouds, with a low around 71. South southwest wind around 5 mph becoming calm in the evening.

    Low: 71 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Partly sunny, with a high near 95. Heat index values as high as 109. Light southwest wind increasing to 5 to 9 mph in the morning.

    High: 95 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 30 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 Chance
    Showers

  • Monday

    Monday: Sunny, with a high near 95. Southwest wind 7 to 10 mph.

    High: 95 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 70.

    Low: 70 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 90.

    High: 90 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 66.

    Low: 66 °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
Increasing clouds, with a low around 71. South southwest wind around 5 mph becoming calm in the evening.
Sunday
Partly sunny, with a high near 95. Heat index values as high as 109. Light southwest wind increasing to 5 to 9 mph in the morning.
Sunday Night
A 30 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 7 to 10 mph.
Monday Night
Mostly clear, with a low around 70.
Tuesday
Mostly sunny, with a high near 90.
Tuesday Night
Mostly clear, with a low around 66.
Wednesday
Sunny, with a high near 91.
Wednesday Night
Partly cloudy, with a low around 68.
Thursday
Mostly sunny, with a high near 90.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67.
Friday
Mostly sunny, with a high near 89.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tama IA
 41.97°N 92.57°W
Last Update:
5:56 am CDT Jul 25, 2026
Forecast Valid:
6am CDT Jul 25, 2026-6pm CDT Jul 31, 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