Winter Storm to Impact the Region this Afternoon - Monday Morning

A strong winter storm moves through the region this afternoon through Monday morning. The combination of moderate to heavy snow, strong northwest winds, and falling temperatures will lead to hazardous travel conditions for much of the area. The greatest impacts in Wisconsin are expected to be along and north of I-90, while blizzard conditions are likely west of the Mississippi River. Read More >

Hazardous Weather Conditions

Current conditions at

Decorah (KDEH)

Lat: 43.28°NLon: 91.73°WElev: 1158ft.

Fog

37°F

3°C

Humidity	100%
Wind Speed	Calm
Barometer	29.63 in
Dewpoint	37°F (3°C)
Visibility	0.15 mi
Last update	28 Dec 4:35 am CST

More Information:

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

Extended Forecast for

4 Miles NE Castalia IA

Dense Fog Advisory December 28, 04:48am until December 28, 12:00pm

Winter Storm Warning December 28, 03:00pm until December 29, 12:00pm

Click here for hazard details and duration

Dense Fog Advisory

Winter Storm Warning

Dense Fog Advisory December 28, 04:48am until December 28, 12:00pm
NOW until 12:00pm Sun
Dense Fog Advisory
Overnight
Low: 36 °F
Slight Chance
Rain and
Dense Fog
Sunday
High: 38 °F⇓
Rain/Snow and
Patchy
Blowing Snow
Sunday Night
Low: 8 °F
Snow and
Blowing Snow
Monday
High: 12 °F
Chance Snow
and Patchy
Blowing Snow
Monday Night
Low: 2 °F
Mostly Clear
Tuesday
High: 27 °F
Partly Sunny
Tuesday Night
Low: 16 °F
Mostly Cloudy
Wednesday
High: 22 °F
Mostly Cloudy
then Slight
Chance Snow

Detailed Forecast

Overnight

A 20 percent chance of rain after 5am. Widespread dense fog. Otherwise, cloudy, with a low around 36. Light northeast wind.

Sunday

Snow, possibly mixed with rain, becoming all snow after 3pm. Patchy blowing snow after 3pm. Areas of dense fog before 9am. Temperature rising to near 38 by 9am, then falling to around 19 during the remainder of the day. Breezy, with a northeast 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 100%. New snow accumulation of 1 to 2 inches possible.

Sunday Night

Snow, mainly before 5am. Widespread blowing snow, mainly between 7pm and midnight. Low around 8. Wind chill values as low as -12. Windy, with a west wind around 26 mph, with gusts as high as 46 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

Monday

A 30 percent chance of snow, mainly before 8am. Patchy blowing snow before 2pm. Mostly sunny, with a high near 12. Wind chill values as low as -13. Blustery, with a northwest wind 16 to 25 mph, with gusts as high as 45 mph.

Monday Night

Mostly clear, with a low around 2. Northwest wind 6 to 15 mph, with gusts as high as 25 mph.

Tuesday

Partly sunny, with a high near 27. Southwest wind 6 to 10 mph, with gusts as high as 18 mph.

Tuesday Night

Mostly cloudy, with a low around 16. Northwest wind around 10 mph, with gusts as high as 20 mph.

Wednesday

A 20 percent chance of snow after noon. Mostly cloudy, with a high near 22. Northwest wind 8 to 10 mph, with gusts as high as 20 mph.

Wednesday Night

A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 7. North wind around 7 mph.

New Year's Day

Sunny, with a high near 14. Northwest wind around 7 mph.