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

50°F

10°C

Humidity	100%
Wind Speed	E 7 mph
Barometer	29.72 in
Dewpoint	50°F (10°C)
Visibility	0.25 mi
Wind Chill	47°F (8°C)
Last update	27 Dec 8:55 pm CST

More Information:

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

Extended Forecast for

4 Miles SSW Bonaparte IA

Wind Advisory December 28, 02:00pm until December 29, 06:00pm

Dense Fog Advisory December 27, 09:08pm until December 28, 06:00am

Click here for hazard details and duration

Wind Advisory

Dense Fog Advisory

Dense Fog Advisory December 27, 09:08pm until December 28, 06:00am
NOW until 6:00am Sun
Dense Fog Advisory
Tonight
Low: 50 °F
Chance Rain
and Patchy
Fog
Sunday
High: 53 °F⇓
Rain then
Wintry Mix
Likely and
Breezy
Sunday Night
Low: 13 °F
Slight Chance
Snow and
Blustery
Monday
High: 22 °F
Decreasing
Clouds and
Blustery
Monday Night
Low: 11 °F
Mostly Clear
Tuesday
High: 33 °F
Mostly Sunny
Tuesday Night
Low: 24 °F
Partly Cloudy
Wednesday
High: 38 °F
Partly Sunny

Detailed Forecast

Tonight

A 50 percent chance of rain, mainly after 3am. Patchy fog. Otherwise, cloudy, with a low around 50. South wind around 5 mph.

Sunday

Rain before 3pm, then a chance of sleet between 3pm and 4pm, then a chance of snow after 4pm. Temperature rising to near 53 by 9am, then falling to around 28 during the remainder of the day. Breezy, with a south wind 5 to 10 mph becoming northwest 15 to 20 mph in the morning. Winds could gust as high as 40 mph. Chance of precipitation is 90%. Little or no snow and sleet accumulation expected.

Sunday Night

A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 13. Wind chill values as low as -5. Blustery, with a west wind around 20 mph, with gusts as high as 40 mph.

Monday

Mostly cloudy, then gradually becoming sunny, with a high near 22. Wind chill values as low as -5. Blustery, with a northwest wind 15 to 20 mph, with gusts as high as 40 mph.

Monday Night

Mostly clear, with a low around 11.

Tuesday

Mostly sunny, with a high near 33.

Tuesday Night

Partly cloudy, with a low around 24.

Wednesday

Partly sunny, with a high near 38.

Wednesday Night

Mostly cloudy, with a low around 18.

New Year's Day

Mostly sunny, with a high near 29.