National Weather Service

News Headlines

Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Fair

14°F

-10°C

Humidity	74%
Wind Speed	Calm
Barometer	30.30 in
Dewpoint	7°F (-14°C)
Visibility	10.00 mi
Last update	23 Feb 8:15 pm CST

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Sully IA

Tonight
Low: 13 °F⇑
Partly Cloudy
Tuesday
High: 41 °F
Mostly Cloudy
Tuesday Night
Low: 19 °F
Decreasing
Clouds
Wednesday
High: 34 °F
Mostly Sunny
then Slight
Chance Snow
Wednesday Night
Low: 23 °F
Chance
Rain/Snow
then Chance
Snow
Thursday
High: 39 °F
Mostly Sunny
Thursday Night
Low: 28 °F
Mostly Clear
Friday
High: 57 °F
Sunny
Friday Night
Low: 26 °F
Mostly Clear

Detailed Forecast

Tonight

Partly cloudy, with a temperature falling to near 13 by 11pm, then rising to around 20 during the remainder of the night. Wind chill values as low as 5. Light southeast wind becoming south 6 to 11 mph in the evening. Winds could gust as high as 20 mph.

Tuesday

Mostly cloudy, with a high near 41. Wind chill values as low as 10. South wind 10 to 15 mph becoming west in the afternoon. Winds could gust as high as 25 mph.

Tuesday Night

Mostly cloudy, then gradually becoming mostly clear, with a low around 19. Northwest wind 6 to 8 mph.

Wednesday

A 20 percent chance of snow after noon. Increasing clouds, with a high near 34. North northwest wind around 6 mph becoming east northeast in the afternoon.

Wednesday Night

A chance of rain and snow before 9pm, then a chance of snow. Mostly cloudy, with a low around 23. East northeast wind around 6 mph. Chance of precipitation is 50%. New snow accumulation of around an inch possible.

Thursday

Mostly sunny, with a high near 39.

Thursday Night

Mostly clear, with a low around 28.

Friday

Sunny, with a high near 57.

Friday Night

Mostly clear, with a low around 26.

Saturday

Mostly sunny, with a high near 38. Breezy.

Saturday Night

Mostly cloudy, with a low around 17.