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.

Overcast

51°F

11°C

Humidity 62%
Wind Speed E 12 G 17 mph
Barometer 30.27 in
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 21 May 9:15 am CDT
Extended Forecast for

2 Miles NE Sully IA

  • Today

    Today: A chance of sprinkles before noon. Mostly cloudy, with a high near 63. East wind around 11 mph, with gusts as high as 18 mph.

    High: 63 °F

    Chance
    Sprinkles

  • Tonight

    Tonight: Mostly cloudy, with a low around 48. East wind 9 to 11 mph, with gusts as high as 20 mph.

    Low: 48 °F

    Mostly Cloudy

  • Friday

    Friday: A slight chance of showers before 10am, then a chance of showers after noon. Mostly cloudy, with a high near 66. East wind 11 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 66 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 52. East wind 5 to 8 mph becoming calm after midnight. New precipitation amounts of less than a tenth of an inch possible.

    Low: 52 °F

    Chance
    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 75. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 75 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 52.

    Low: 52 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

  • Memorial Day

    Memorial Day: Sunny, with a high near 84.

    High: 84 °F

    Sunny

Detailed Forecast

Today
A chance of sprinkles before noon. Mostly cloudy, with a high near 63. East wind around 11 mph, with gusts as high as 18 mph.
Tonight
Mostly cloudy, with a low around 48. East wind 9 to 11 mph, with gusts as high as 20 mph.
Friday
A slight chance of showers before 10am, then a chance of showers after noon. Mostly cloudy, with a high near 66. East wind 11 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A 30 percent chance of showers, mainly after 1am. Mostly cloudy, with a low around 52. East wind 5 to 8 mph becoming calm after midnight. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Partly sunny, with a high near 75. Calm wind becoming west 5 to 7 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 52.
Sunday
Mostly sunny, with a high near 80.
Sunday Night
Mostly clear, with a low around 55.
Memorial Day
Sunny, with a high near 84.
Monday Night
Partly cloudy, with a low around 59.
Tuesday
Mostly sunny, with a high near 84.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 62.
Wednesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85.
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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:
6:11 am CDT May 21, 2026
Forecast Valid:
9am CDT May 21, 2026-6pm CDT May 27, 2026
 
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