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

Hazardous Weather Conditions

Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Mostly Cloudy

59°F

15°C

Humidity 65%
Wind Speed S 10 mph
Barometer 30.21 in
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 10 Oct 12:55 am CDT
Extended Forecast for

2 Miles NE Sully IA

  • Overnight

    Overnight: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a steady temperature around 58. South southeast wind around 7 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 58 °F

    Chance
    Showers

  • Friday

    Friday: A 10 percent chance of showers before 7am. Mostly cloudy, then gradually becoming sunny, with a high near 76. South southwest wind around 8 mph becoming northwest in the afternoon.

    High: 76 °F

    Slight Chance
    Showers then
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 42. North wind 3 to 6 mph.

    Low: 42 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 69. Calm wind becoming east around 6 mph in the afternoon.

    High: 69 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 50. East southeast wind 5 to 9 mph, with gusts as high as 18 mph.

    Low: 50 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 77. Breezy.

    High: 77 °F

    Partly Sunny
    then Mostly
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: A 20 percent chance of showers. Mostly cloudy, with a low around 58.

    Low: 58 °F

    Slight Chance
    Showers

  • Columbus Day

    Columbus Day: A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 72.

    High: 72 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a steady temperature around 58. South southeast wind around 7 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
A 10 percent chance of showers before 7am. Mostly cloudy, then gradually becoming sunny, with a high near 76. South southwest wind around 8 mph becoming northwest in the afternoon.
Friday Night
Mostly clear, with a low around 42. North wind 3 to 6 mph.
Saturday
Sunny, with a high near 69. Calm wind becoming east around 6 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 50. East southeast wind 5 to 9 mph, with gusts as high as 18 mph.
Sunday
Mostly sunny, with a high near 77. Breezy.
Sunday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 58.
Columbus Day
A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 72.
Monday Night
Partly cloudy, with a low around 44.
Tuesday
Mostly sunny, with a high near 66.
Tuesday Night
Mostly cloudy, with a low around 47.
Wednesday
Mostly sunny, with a high near 69.
Wednesday Night
Partly cloudy, with a low around 50.
Thursday
Mostly sunny, with a high near 74.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NE Sully IA
 41.6°N 92.81°W
Last Update:
12:57 am CDT Oct 10, 2025
Forecast Valid:
1am CDT Oct 10, 2025-6pm CDT Oct 16, 2025
 
Forecast Discussion
 
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Additional Resources

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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