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 and Breezy

-1°F

-18°C

Humidity 71%
Wind Speed NW 25 G 30 mph
Barometer 30.28 in
Dewpoint -8°F (-22°C)
Visibility 10.00 mi
Wind Chill-25°F (-32°C)
Last update 19 Jan 5:35 am CST
Extended Forecast for

2 Miles NE Sully IA

Cold Weather Advisory January 19, 05:50am until January 19, 12:00pm
Click here for hazard details and duration
Cold Weather Advisory
  •  
    Cold Weather Advisory January 19, 05:50am until January 19, 12:00pm

    NOW until 12:00pm Mon

    Cold Weather Advisory

  • M.L.King Day

    High: 13 °F

    Mostly Sunny
    and Blustery

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 3. West wind around 6 mph becoming calm in the evening.

    Low: 3 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: Increasing clouds, with a high near 25. Wind chill values as low as 5. Calm wind becoming south around 6 mph in the afternoon.

    High: 25 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A 40 percent chance of snow before midnight. Cloudy, then gradually becoming partly cloudy, with a low around 16. Wind chill values as low as 10. Southeast wind 6 to 8 mph becoming west northwest after midnight. New snow accumulation of less than a half inch possible.

    Low: 16 °F

    Chance Snow
    then Mostly
    Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 33. West wind 8 to 14 mph, with gusts as high as 23 mph.

    High: 33 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 11.

    Low: 11 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 26.

    High: 26 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around -3.

    Low: -3 °F

    Mostly Cloudy

Detailed Forecast

M.L.King Day
Mostly sunny, with a high near 13. Wind chill values as low as -20. Blustery, with a northwest wind 15 to 20 mph decreasing to 8 to 13 mph in the afternoon. Winds could gust as high as 30 mph.
Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 3. West wind around 6 mph becoming calm in the evening.
Tuesday
Increasing clouds, with a high near 25. Wind chill values as low as 5. Calm wind becoming south around 6 mph in the afternoon.
Tuesday Night
A 40 percent chance of snow before midnight. Cloudy, then gradually becoming partly cloudy, with a low around 16. Wind chill values as low as 10. Southeast wind 6 to 8 mph becoming west northwest after midnight. New snow accumulation of less than a half inch possible.
Wednesday
Mostly sunny, with a high near 33. West wind 8 to 14 mph, with gusts as high as 23 mph.
Wednesday Night
Partly cloudy, with a low around 11.
Thursday
Mostly sunny, with a high near 26.
Thursday Night
Mostly cloudy, with a low around -3.
Friday
Partly sunny and cold, with a high near 3.
Friday Night
Mostly cloudy, with a low around -12.
Saturday
Partly sunny and cold, with a high near 4.
Saturday Night
Partly cloudy, with a low around -2.
Sunday
Sunny, with a high near 18.
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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:
4:27 am CST Jan 19, 2026
Forecast Valid:
5am CST Jan 19, 2026-6pm CST Jan 25, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation