Tracking Late December Winter Storm Expected to Impact the Northern Plains through the Northeast U.S.

A winter storm system will rapidly intensify over the Midwest on Sunday and track through the Great Lakes on Monday. Periods of heavy snow are anticipated across the Upper Great Lakes late Sunday and continuing into Monday. At least 1/10 inch of ice accumulation is expected from a wintry mix across much of the interior Northeast U.S. starting Sunday afternoon. Read More >

Hazardous Weather Conditions

Current conditions at

Fort Madison Municipal Airport (KFSW)

Lat: 40.66°NLon: 91.33°WElev: 719ft.

Fog/Mist

43°F

6°C

Humidity	100%
Wind Speed	SE 10 mph
Barometer	29.92 in
Dewpoint	43°F (6°C)
Visibility	0.75 mi
Wind Chill	37°F (3°C)
Last update	27 Dec 10:15 am CST

More Information:

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

Extended Forecast for

Donnellson IA

Dense Fog Advisory December 27, 10:38am until December 27, 12:00pm

Click here for hazard details and duration

Dense Fog Advisory

Dense Fog Advisory December 27, 10:38am until December 27, 12:00pm
NOW until 12:00pm Sat
Dense Fog Advisory
Today
High: 53 °F
Areas Dense
Fog
Tonight
Low: 50 °F
Chance Rain
and Patchy
Fog
Sunday
High: 58 °F⇓
Rain then
Rain/Snow and
Breezy
Sunday Night
Low: 13 °F
Slight Chance
Wintry Mix
and Blustery
Monday
High: 22 °F
Partly Sunny
and Blustery
Monday Night
Low: 13 °F
Mostly Clear
and Blustery
then Mostly
Clear
Tuesday
High: 33 °F
Mostly Sunny
Tuesday Night
Low: 24 °F
Partly Cloudy

Detailed Forecast

Today

Areas of dense fog before 2pm. Otherwise, mostly cloudy, with a high near 53. Southeast wind around 10 mph, with gusts as high as 20 mph.

Tonight

A 40 percent chance of rain, mainly after midnight. Patchy fog. Otherwise, cloudy, with a low around 50. South wind around 5 mph.

Sunday

Rain before 3pm, then rain and snow. Some thunder is also possible. Temperature rising to near 58 by 9am, then falling to around 35 during the remainder of the day. Breezy, with a south wind 5 to 10 mph becoming northwest 15 to 25 mph in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

Sunday Night

A slight chance of snow before 9pm, then a slight chance of freezing rain between 9pm and midnight. Mostly cloudy, with a low around 13. Wind chill values as low as -5. Blustery, with a west wind around 25 mph, with gusts as high as 40 mph. Chance of precipitation is 20%.

Monday

Partly sunny, with a high near 22. Blustery.

Monday Night

Mostly clear, with a low around 13. Blustery.

Tuesday

Mostly sunny, with a high near 33.

Tuesday Night

Partly cloudy, with a low around 24.

Wednesday

Partly sunny, with a high near 37.

Wednesday Night

Mostly cloudy, with a low around 14.