Dangerous Heat in the Central and Eastern U.S.; Critical Fire Weather in the Great Basin and Southwest

Dangerous, record-breaking heat will intensify across most of the central and eastern U.S this week. Heat indices will likely exceed 100 degrees. Heat is likely to continue across the eastern U.S. through the Independence Day holiday weekend. Critical fire weather conditions will continue Tuesday across portions of the Four Corners and Great Basin, as dry conditions and gusty winds persist. Read More >

Current conditions at

Atlantic (KAIO)

Lat: 41.4°NLon: 95.05°WElev: 1181ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Griswold IA

Extreme Heat Warning June 29, 11:27pm until June 30, 09:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning June 29, 11:27pm until June 30, 09:00pm

    NOW until 9:00pm Tue

    Extreme Heat Warning

  • Tonight

    Low: 77 °F

    Partly Cloudy
    and Breezy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 93. Heat index values as high as 101. Breezy, with a south southwest wind 13 to 18 mph, with gusts as high as 28 mph.

    High: 93 °F

    Mostly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers and thunderstorms, mainly before 9pm.  Mostly cloudy, with a low around 75. South wind 11 to 14 mph, with gusts as high as 22 mph.

    Low: 75 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms before 1pm.  Mostly sunny, with a high near 91. Windy, with a south wind 14 to 21 mph, with gusts as high as 30 mph.

    High: 91 °F

    Slight Chance
    T-storms and
    Windy

  • Wednesday Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms, mainly after 1am.  Mostly cloudy, with a low around 76. Breezy, with a south wind 13 to 17 mph, with gusts as high as 26 mph.  New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 76 °F

    Chance
    T-storms and
    Breezy

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms before 1pm.  Mostly sunny, with a high near 90. Breezy.  New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 90 °F

    Chance
    T-storms and
    Breezy

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms.  Partly cloudy, with a low around 74. Breezy.

    Low: 74 °F

    Chance
    T-storms and
    Breezy

  • Friday

    Friday: Mostly sunny, with a high near 93.

    High: 93 °F

    Mostly Sunny

Detailed Forecast

Tonight
Partly cloudy, with a low around 77. Breezy, with a south wind 10 to 16 mph, with gusts as high as 24 mph.
Tuesday
Mostly sunny, with a high near 93. Heat index values as high as 101. Breezy, with a south southwest wind 13 to 18 mph, with gusts as high as 28 mph.
Tuesday Night
A 40 percent chance of showers and thunderstorms, mainly before 9pm. Mostly cloudy, with a low around 75. South wind 11 to 14 mph, with gusts as high as 22 mph.
Wednesday
A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 91. Windy, with a south wind 14 to 21 mph, with gusts as high as 30 mph.
Wednesday Night
A 40 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 76. Breezy, with a south wind 13 to 17 mph, with gusts as high as 26 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A 40 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 90. Breezy. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 74. Breezy.
Friday
Mostly sunny, with a high near 93.
Friday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 73.
Independence Day
Mostly sunny, with a high near 93.
Saturday Night
Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 71. Chance of precipitation is 60%.
Sunday
Partly sunny, with a high near 88.
Sunday Night
Partly cloudy, with a low around 66.
Monday
Mostly sunny, with a high near 88.
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ABOUT THIS FORECAST

 
Point Forecast:
Griswold IA
 41.24°N 95.15°W
10:43 pm CDT Jun 29, 2026
11pm CDT Jun 29, 2026-6pm CDT Jul 6, 2026
 
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