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.

Overcast

70°F

21°C

Humidity 93%
Wind Speed SE 13 G 17 mph
Barometer 29.80 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 28 Jun 6:15 am CDT
Extended Forecast for

Tama IA

Extreme Heat Warning June 28, 01:00pm until June 30, 09:00pm
Click here for hazard details and duration
Extreme Heat Warning

  • Today

    Today: A slight chance of showers and thunderstorms between 10am and noon. Partly sunny, with a high near 92. Heat index values as high as 101. Breezy, with a south southeast wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 20%.

    High: 92 °F

    Breezy.
    Slight Chance
    T-storms then
    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 75. South wind 9 to 15 mph, with gusts as high as 24 mph.

    Low: 75 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 96. Heat index values as high as 106. Breezy, with a south wind 10 to 20 mph, with gusts as high as 29 mph.

    High: 96 °F

    Sunny and
    Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 77. Breezy, with a south wind 11 to 18 mph, with gusts as high as 28 mph.

    Low: 77 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 97. Breezy, with a south southwest wind 11 to 16 mph, with gusts as high as 25 mph.

    High: 97 °F

    Hot and
    Breezy

  • Tuesday Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 74.

    Low: 74 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: Sunny, with a high near 96.

    High: 96 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.

    Low: 73 °F

    Chance
    T-storms

  • Thursday

    Thursday: Mostly sunny, with a high near 94.

    High: 94 °F

    Mostly Sunny

Detailed Forecast

Today
A slight chance of showers and thunderstorms between 10am and noon. Partly sunny, with a high near 92. Heat index values as high as 101. Breezy, with a south southeast wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 20%.
Tonight
Partly cloudy, with a low around 75. South wind 9 to 15 mph, with gusts as high as 24 mph.
Monday
Sunny, with a high near 96. Heat index values as high as 106. Breezy, with a south wind 10 to 20 mph, with gusts as high as 29 mph.
Monday Night
Mostly clear, with a low around 77. Breezy, with a south wind 11 to 18 mph, with gusts as high as 28 mph.
Tuesday
Sunny and hot, with a high near 97. Breezy, with a south southwest wind 11 to 16 mph, with gusts as high as 25 mph.
Tuesday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 74.
Wednesday
Sunny, with a high near 96.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.
Thursday
Mostly sunny, with a high near 94.
Thursday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 72.
Friday
Sunny, with a high near 94.
Friday Night
Mostly clear, with a low around 71.
Independence Day
Sunny, with a high near 94.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tama IA
 41.97°N 92.57°W
Last Update:
5:26 am CDT Jun 28, 2026
Forecast Valid:
6am CDT Jun 28, 2026-6pm CDT Jul 4, 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