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

77°F

25°C

Humidity 83%
Wind Speed SE 10 mph
Barometer 29.88 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 30 Aug 10:15 pm CDT
Extended Forecast for

2 Miles NW Oakland Acres IA

Heat Advisory August 31, 01:00pm until September 2, 07:00pm
Click here for hazard details and duration
Heat Advisory

  • Tonight

    Tonight: Mostly cloudy, with a low around 75. South wind around 10 mph.

    Low: 75 °F

    Mostly Cloudy

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms before 4pm. Mostly sunny, with a high near 93. Southwest wind 6 to 10 mph.

    High: 93 °F

    Slight Chance
    T-storms

  • Monday Night

    Monday Night: Partly cloudy, with a low around 74. Calm wind.

    Low: 74 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 95. Heat index values as high as 100. Calm wind becoming south southwest around 5 mph in the morning.

    High: 95 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 74. East wind around 6 mph becoming south after midnight.

    Low: 74 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 95.

    High: 95 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 73.

    Low: 73 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 91.

    High: 91 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 72.

    Low: 72 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 75. South wind around 10 mph.
Monday
A 20 percent chance of showers and thunderstorms before 4pm. Mostly sunny, with a high near 93. Southwest wind 6 to 10 mph.
Monday Night
Partly cloudy, with a low around 74. Calm wind.
Tuesday
Mostly sunny, with a high near 95. Heat index values as high as 100. Calm wind becoming south southwest around 5 mph in the morning.
Tuesday Night
Mostly clear, with a low around 74. East wind around 6 mph becoming south after midnight.
Wednesday
Sunny, with a high near 95.
Wednesday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 73.
Thursday
A 30 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 91.
Thursday Night
Partly cloudy, with a low around 72.
Friday
Mostly sunny, with a high near 91.
Friday Night
Mostly clear, with a low around 69.
Saturday
Sunny, with a high near 90.
Saturday Night
Mostly clear, with a low around 67.
Sunday
Mostly sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NW Oakland Acres IA
 41.75°N 92.87°W
Last Update:
8:46 pm CDT Aug 30, 2026
Forecast Valid:
10pm CDT Aug 30, 2026-6pm CDT Sep 6, 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