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

76°F

24°C

Humidity 88%
Wind Speed SW 5 mph
Barometer 30.00 in
Dewpoint 72°F (22°C)
Visibility 7.00 mi
Heat Index76°F (24°C)
Last update 25 Jul 12:55 pm CDT
Extended Forecast for

Brooklyn 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

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 90. Light southwest wind.

    High: 90 °F

    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 109. Southwest wind 3 to 8 mph.

    High: 95 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms after 5am. Partly cloudy, with a low around 75. Southwest wind around 8 mph.

    Low: 75 °F

    Mostly Cloudy
    then Chance
    Showers

  • Monday

    Monday: A 10 percent chance of showers and thunderstorms before 7am. Sunny, with a high near 95. Southwest wind around 9 mph.

    High: 95 °F

    Slight Chance
    T-storms then
    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

This Afternoon
Mostly sunny, with a high near 90. Light southwest wind.
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 109. Southwest wind 3 to 8 mph.
Sunday Night
A 30 percent chance of showers and thunderstorms after 5am. Partly cloudy, with a low around 75. Southwest wind around 8 mph.
Monday
A 10 percent chance of showers and thunderstorms before 7am. Sunny, with a high near 95. Southwest wind around 9 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
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:
Brooklyn IA
 41.73°N 92.46°W
Last Update:
12:22 pm CDT Jul 25, 2026
Forecast Valid:
1pm 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