Severe Thunderstorms Possible from Ohio Valley to Mid-Atlantic; Excessive Heat in Central U.S.

Thunderstorms associated with wind damage and a risk for a tornado, will be possible from the Ohio Valley, central Appalachians and Mid-Atlantic states on Thursday. Dangerous heat will be possible from the Central Plains into the northern Gulf Coast though the weekend. Heavy rain in the Southwest U.S. could lead to flash flooding over the next several days as monsoonal conditions persist. Read More >

Hazardous Weather Conditions

Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Fair

83°F

28°C

Humidity 83%
Wind Speed W 6 mph
Barometer 29.99 in
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index92°F (33°C)
Last update 29 Jul 8:35 am CDT
Extended Forecast for

Sully IA

  • Today

    Today: A 20 percent chance of showers and thunderstorms before 9am.  Mostly sunny, with a high near 92. Heat index values as high as 100. West southwest wind 7 to 10 mph becoming north in the afternoon.

    Slight Chance
    T-storms then
    Mostly Sunny

    High: 92 °F

  • Tonight

    Tonight: Mostly clear, with a low around 66. East northeast wind 5 to 8 mph.

    Mostly Clear

    Low: 66 °F

  • Friday

    Friday: Scattered showers and thunderstorms, mainly after 4pm.  Mostly sunny, with a high near 82. East southeast wind 5 to 7 mph.  Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Scattered
    T-storms

    High: 82 °F

  • Friday
    Night

    Friday Night: Showers and thunderstorms likely, mainly after 1am.  Mostly cloudy, with a low around 64. East wind 3 to 6 mph.  Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

    T-storms
    Likely

    Low: 64 °F

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms before 1pm.  Partly sunny, with a high near 81. Light and variable wind becoming east southeast around 5 mph.  New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Chance
    T-storms

    High: 81 °F

  • Saturday
    Night

    Saturday Night: Mostly clear, with a low around 62.

    Mostly Clear

    Low: 62 °F

  • Sunday

    Sunday: Sunny, with a high near 82.

    Sunny

    High: 82 °F

  • Sunday
    Night

    Sunday Night: Mostly clear, with a low around 58.

    Mostly Clear

    Low: 58 °F

  • Monday

    Monday: Sunny, with a high near 80.

    Sunny

    High: 80 °F

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms before 9am. Mostly sunny, with a high near 92. Heat index values as high as 100. West southwest wind 7 to 10 mph becoming north in the afternoon.
Tonight
Mostly clear, with a low around 66. East northeast wind 5 to 8 mph.
Friday
Scattered showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 82. East southeast wind 5 to 7 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 64. East wind 3 to 6 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday
A 50 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 81. Light and variable wind becoming east southeast around 5 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Mostly clear, with a low around 62.
Sunday
Sunny, with a high near 82.
Sunday Night
Mostly clear, with a low around 58.
Monday
Sunny, with a high near 80.
Monday Night
Mostly clear, with a low around 59.
Tuesday
Sunny, with a high near 81.
Tuesday Night
Mostly clear, with a low around 59.
Wednesday
Sunny, with a high near 83.
Click Map For Forecast
Point Forecast:
Sully IA
 41.58°N 92.84°W
8:36 am CDT Jul 29, 2021
8am CDT Jul 29, 2021-6pm CDT Aug 4, 2021
 
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Additional Resources

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