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

Areas of Excessive Rainfall and Severe Thunderstorms Friday

Heavy thunderstorms may bring areas of excessive rainfall and locally considerable flooding over parts of the Ozarks into the lower-Mississippi River Valley Friday and Saturday. Scattered severe thunderstorms may occur Friday from Montana into the central Plains, with hail and corridors of damaging winds possible. Read More >

Hazardous Weather Conditions

Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Fair

64°F

18°C

Humidity 93%
Wind Speed Calm
Barometer 29.97 in
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 13 Jun 5:55 am CDT
Extended Forecast for

Sully IA

  • Today

    Today: Partly sunny, with a high near 83. Southeast wind 3 to 8 mph.

    High: 83 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 65. Southeast wind 3 to 6 mph.

    Low: 65 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 86. Southeast wind 3 to 6 mph.

    High: 86 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 67. Southeast wind around 5 mph.

    Low: 67 °F

    Partly Cloudy

  • Sunday

    Sunday: A slight chance of showers, then a chance of showers and thunderstorms after 10am. Partly sunny, with a high near 89. South 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.

    High: 89 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 67 °F

    Chance
    T-storms

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 89.

    High: 89 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67.

    Low: 67 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 87. Chance of precipitation is 40%.

    High: 87 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
Partly sunny, with a high near 83. Southeast wind 3 to 8 mph.
Tonight
Mostly cloudy, with a low around 65. Southeast wind 3 to 6 mph.
Saturday
Mostly sunny, with a high near 86. Southeast wind 3 to 6 mph.
Saturday Night
Partly cloudy, with a low around 67. Southeast wind around 5 mph.
Sunday
A slight chance of showers, then a chance of showers and thunderstorms after 10am. Partly sunny, with a high near 89. South 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.
Sunday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 89.
Monday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67.
Tuesday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 87. Chance of precipitation is 40%.
Tuesday Night
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 1am. Low around 69. Chance of precipitation is 80%.
Wednesday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.
Wednesday Night
A 30 percent chance of showers. Partly cloudy, with a low around 63.
Juneteenth
Sunny, with a high near 85.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sully IA
 41.58°N 92.84°W
Last Update:
2:35 am CDT Jun 13, 2025
Forecast Valid:
6am CDT Jun 13, 2025-6pm CDT Jun 19, 2025
 
Forecast Discussion
 
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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