National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Fair

86°F

30°C

Humidity 42%
Wind Speed S 12 mph
Barometer 30.13 in
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 3 Oct 2:55 pm CDT
Extended Forecast for

4 Miles E Brooklyn IA

  • This Afternoon

    This Afternoon: Sunny, with a high near 90. South southwest wind around 8 mph.

    High: 90 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 65. South wind 3 to 6 mph.

    Low: 65 °F

    Clear

  • Saturday

    Saturday: Sunny, with a high near 89. Breezy, with a south wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 28 mph.

    High: 89 °F

    Sunny then
    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Clear, with a low around 61. South wind around 11 mph, with gusts as high as 21 mph.

    Low: 61 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 86. Breezy, with a south wind 13 to 20 mph, with gusts as high as 30 mph.

    High: 86 °F

    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 57. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 57 °F

    Chance
    T-storms then
    Showers
    Likely

  • Monday

    Monday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 68. Chance of precipitation is 60%.

    High: 68 °F

    Showers
    Likely

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 51. Chance of precipitation is 60%.

    Low: 51 °F

    Showers
    Likely

  • Tuesday

    Tuesday: Mostly sunny, with a high near 69.

    High: 69 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 90. South southwest wind around 8 mph.
Tonight
Clear, with a low around 65. South wind 3 to 6 mph.
Saturday
Sunny, with a high near 89. Breezy, with a south wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 28 mph.
Saturday Night
Clear, with a low around 61. South wind around 11 mph, with gusts as high as 21 mph.
Sunday
Sunny, with a high near 86. Breezy, with a south wind 13 to 20 mph, with gusts as high as 30 mph.
Sunday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 57. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Monday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 68. Chance of precipitation is 60%.
Monday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 51. Chance of precipitation is 60%.
Tuesday
Mostly sunny, with a high near 69.
Tuesday Night
Mostly clear, with a low around 43.
Wednesday
Sunny, with a high near 70.
Wednesday Night
Mostly clear, with a low around 44.
Thursday
Sunny, with a high near 71.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E Brooklyn IA
 41.72°N 92.37°W
Last Update:
2:51 pm CDT Oct 3, 2025
Forecast Valid:
2pm CDT Oct 3, 2025-6pm CDT Oct 9, 2025
 
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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