Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Overcast

45°F

7°C

Humidity 78%
Wind Speed N 8 mph
Barometer 30.13 in
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 1 Nov 3:35 pm CDT
Extended Forecast for

Sully IA

  • This Afternoon

    This Afternoon: A 30 percent chance of showers.  Mostly cloudy, with a high near 46. North northwest wind around 8 mph.  New precipitation amounts of less than a tenth of an inch possible.

    High: 46 °F

    Chance
    Showers

  • Tonight

    Tonight: A 20 percent chance of showers before 8pm.  Mostly cloudy, with a low around 34. Light northwest wind.

    Low: 34 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 53. Light south southwest wind increasing to 10 to 15 mph in the morning. Winds could gust as high as 22 mph.

    High: 53 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 38. South wind 6 to 9 mph.

    Low: 38 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 61. West wind around 7 mph becoming north northwest in the afternoon.

    High: 61 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 39.

    Low: 39 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 66.

    High: 66 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

Detailed Forecast

This Afternoon
A 30 percent chance of showers. Mostly cloudy, with a high near 46. North northwest wind around 8 mph. New precipitation amounts of less than a tenth of an inch possible.
Tonight
A 20 percent chance of showers before 8pm. Mostly cloudy, with a low around 34. Light northwest wind.
Sunday
Mostly sunny, with a high near 53. Light south southwest wind increasing to 10 to 15 mph in the morning. Winds could gust as high as 22 mph.
Sunday Night
Mostly clear, with a low around 38. South wind 6 to 9 mph.
Monday
Sunny, with a high near 61. West wind around 7 mph becoming north northwest in the afternoon.
Monday Night
Partly cloudy, with a low around 39.
Tuesday
Mostly sunny, with a high near 66.
Tuesday Night
Partly cloudy, with a low around 42.
Wednesday
Sunny, with a high near 60.
Wednesday Night
Mostly clear, with a low around 36.
Thursday
Partly sunny, with a high near 62.
Thursday Night
Mostly cloudy, with a low around 45.
Friday
Sunny, with a high near 64.
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ABOUT THIS FORECAST

 
Point Forecast:
Sully IA
 41.58°N 92.84°W
2:36 pm CDT Nov 1, 2025
3pm CDT Nov 1, 2025-6pm CST Nov 7, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database