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

Excessive Rainfall Possible This Weekend; October Heat Wave in California

A slow moving front will be the focus area for heavy to excessive rainfall and a threat for flash/urban flooding across the northern Gulf Coast and Southeast U.S. through this weekend. Abnormally hot, potentially record-breaking, temperatures will impact southern California and stretch north toward the Bay Area and Central Valley into next week. Read More >

Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Fair

71°F

22°C

Humidity 36%
Wind Speed S 9 mph
Barometer 30.13 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 3 Oct 4:55 pm CDT
Extended Forecast for

Sully IA

  • Tonight

    Tonight: Mostly clear, with a low around 52. South southwest wind around 5 mph becoming light and variable in the evening.

    Low: 52 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 68. North wind 5 to 9 mph.

    High: 68 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 45. Light north wind.

    Low: 45 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 67. Calm wind becoming south southeast around 5 mph in the afternoon.

    High: 67 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 49. South southeast wind 3 to 6 mph.

    Low: 49 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 72.

    High: 72 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 52. South southwest wind around 5 mph becoming light and variable in the evening.
Sunday
Sunny, with a high near 68. North wind 5 to 9 mph.
Sunday Night
Mostly clear, with a low around 45. Light north wind.
Monday
Sunny, with a high near 67. Calm wind becoming south southeast around 5 mph in the afternoon.
Monday Night
Clear, with a low around 49. South southeast wind 3 to 6 mph.
Tuesday
Sunny, with a high near 72.
Tuesday Night
Mostly clear, with a low around 56.
Wednesday
Sunny, with a high near 73.
Wednesday Night
Mostly clear, with a low around 52.
Thursday
Sunny, with a high near 71.
Thursday Night
Mostly clear, with a low around 54.
Friday
Sunny, with a high near 72.
Friday Night
Mostly clear, with a low around 58.
Saturday
Sunny, with a high near 76.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sully IA
 41.58°N 92.84°W
Last Update:
1:43 pm CDT Oct 3, 2026
Forecast Valid:
5pm CDT Oct 3, 2026-6pm CDT Oct 10, 2026
 
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