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

Atlantic (KAIO)

Lat: 41.4°NLon: 95.05°WElev: 1181ft.

Fair

81°F

27°C

Humidity 58%
Wind Speed W 5 mph
Barometer 30.10 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 27 Aug 3:55 pm CDT
Extended Forecast for

Griswold IA

  • This Afternoon

    This Afternoon: Sunny, with a high near 84. North wind around 5 mph.

    High: 84 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 61. Calm wind.

    Low: 61 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 86. Calm wind becoming south 5 to 9 mph in the morning.

    High: 86 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms after 4am.  Mostly cloudy, with a low around 69. South wind 8 to 14 mph, with gusts as high as 21 mph.

    Low: 69 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms before 1pm.  Partly sunny, with a high near 90. Breezy, with a south southeast wind 14 to 20 mph, with gusts as high as 29 mph.  New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 90 °F

    Chance
    Showers and
    Breezy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 78. Breezy.

    Low: 78 °F

    Mostly Clear
    then Partly
    Cloudy and
    Breezy

  • Sunday

    Sunday: Mostly sunny, with a high near 96. Breezy.

    High: 96 °F

    Mostly Sunny
    and Breezy

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 77.

    Low: 77 °F

    Slight Chance
    T-storms

  • Monday

    Monday: Partly sunny, with a high near 93.

    High: 93 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 84. North wind around 5 mph.
Tonight
Mostly clear, with a low around 61. Calm wind.
Friday
Mostly sunny, with a high near 86. Calm wind becoming south 5 to 9 mph in the morning.
Friday Night
A 20 percent chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 69. South wind 8 to 14 mph, with gusts as high as 21 mph.
Saturday
A 50 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 90. Breezy, with a south southeast wind 14 to 20 mph, with gusts as high as 29 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Partly cloudy, with a low around 78. Breezy.
Sunday
Mostly sunny, with a high near 96. Breezy.
Sunday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 77.
Monday
Partly sunny, with a high near 93.
Monday Night
A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 73.
Tuesday
A 30 percent chance of showers. Partly sunny, with a high near 91.
Tuesday Night
A 30 percent chance of showers. Partly cloudy, with a low around 73.
Wednesday
Mostly sunny, with a high near 92.
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ABOUT THIS FORECAST

 
Point Forecast:
Griswold IA
 41.24°N 95.15°W
2:01 pm CDT Aug 27, 2026
4pm CDT Aug 27, 2026-6pm CDT Sep 2, 2026
 
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Additional Resources

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