Dangerous Heat in the Southwest; Severe Thunderstorms and Heavy Rain in the Northeast and Mid-Atlantic

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week. Strong to severe thunderstorms may produce damaging wind, hail, a tornado or two, heavy rain and flash flooding across parts of the Mid-Atlantic and Northeast. Heavy rainfall threat continues across the Gulf Coast. Read More >

Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Fair

77°F

25°C

Humidity 61%
Wind Speed N 7 mph
Barometer 30.12 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 27 Aug 11:35 am CDT
Extended Forecast for

Brooklyn IA

  • Today

    Today: Sunny, with a high near 82. North northwest wind around 6 mph.

    High: 82 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 58. Calm wind.

    Low: 58 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 84. Calm wind.

    High: 84 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 64. Calm wind becoming south 5 to 7 mph in the evening.

    Low: 64 °F

    Partly Cloudy

  • Saturday

    Saturday: A 30 percent chance of showers before 1pm.  Partly sunny, with a high near 86. South wind 8 to 14 mph, with gusts as high as 23 mph.  New precipitation amounts of less than a tenth of an inch possible.

    High: 86 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A 20 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 70.

    Low: 70 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: Mostly sunny, with a high near 93.

    High: 93 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 73.

    Low: 73 °F

    Chance
    T-storms

  • Monday

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

    High: 91 °F

    Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 82. North northwest wind around 6 mph.
Tonight
Mostly clear, with a low around 58. Calm wind.
Friday
Sunny, with a high near 84. Calm wind.
Friday Night
Partly cloudy, with a low around 64. Calm wind becoming south 5 to 7 mph in the evening.
Saturday
A 30 percent chance of showers before 1pm. Partly sunny, with a high near 86. South wind 8 to 14 mph, with gusts as high as 23 mph. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Sunday
Mostly sunny, with a high near 93.
Sunday Night
A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.
Monday
A 30 percent chance of showers before 1pm. Mostly sunny, with a high near 91.
Monday Night
A 50 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 70.
Tuesday
A 30 percent chance of showers. Mostly sunny, with a high near 90.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Wednesday
Mostly sunny, with a high near 89.
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ABOUT THIS FORECAST

 
Point Forecast:
Brooklyn IA
 41.73°N 92.46°W
10:02 am CDT Aug 27, 2026
11am CDT Aug 27, 2026-6pm CDT Sep 2, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database