Heavy Rain and Mountain Snow Lingers in California; Winter Storm Impacting the Great Lakes and Northeast U.S.

An atmospheric river will wind down through today across California with lingering heavy rainfall, heavy mountain snow, and gusty winds. A wintry mix of freezing rain, sleet, and snow will cause hazardous travel conditions for the Great Lakes into the northern Mid-Atlantic and southern New England today through Saturday morning. Areas of tree damage and power outages are possible. Read More >

Hazardous Weather Conditions

Current conditions at

Decorah (KDEH)

Lat: 43.28°NLon: 91.73°WElev: 1158ft.

Fog

32°F

0°C

Humidity	100%
Wind Speed	S 6 mph
Barometer	29.90 in
Dewpoint	32°F (0°C)
Visibility	0.25 mi
Wind Chill	26°F (-3°C)
Last update	27 Dec 1:35 am CST

More Information:

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

Extended Forecast for

7 Miles NE Postville IA

Dense Fog Advisory December 27, 01:49am until December 27, 12:00pm

Click here for hazard details and duration

Dense Fog Advisory

Dense Fog Advisory December 27, 01:49am until December 27, 12:00pm
NOW until 12:00pm Sat
Dense Fog Advisory
Overnight
Low: 32 °F
Dense
Freezing Fog
and Dense Fog
Saturday
High: 43 °F
Dense Fog
Saturday Night
Low: 39 °F
Slight Chance
Drizzle then
Mostly Cloudy
Sunday
High: 42 °F
Chance Rain
then
Rain/Snow
Likely and
Breezy
Sunday Night
Low: 7 °F
Chance Snow
and Blustery
Monday
High: 15 °F
Blustery.
Slight Chance
Snow then
Mostly Sunny
Monday Night
Low: 4 °F
Partly Cloudy
Tuesday
High: 28 °F
Partly Sunny

Detailed Forecast

Overnight

Widespread dense fog after 4am. Widespread dense freezing fog before 4am. Otherwise, mostly cloudy, with a low around 32. Southeast wind 5 to 7 mph.

Saturday

Widespread dense fog before 4pm, then patchy dense fog after 5pm. Otherwise, mostly cloudy, with a high near 43. Southeast wind 7 to 9 mph, with gusts as high as 18 mph.

Saturday Night

A slight chance of drizzle before midnight. Cloudy, with a low around 39. Southeast wind 5 to 7 mph becoming calm in the evening.

Sunday

A chance of rain before noon, then snow likely, possibly mixed with rain. Cloudy, with a high near 42. Breezy, with a light north wind becoming northwest 12 to 17 mph in the morning. Winds could gust as high as 28 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

Sunday Night

A 50 percent chance of snow. Cloudy, with a low around 7. Blustery, with a northwest wind 20 to 23 mph, with gusts as high as 37 mph. New snow accumulation of 1 to 2 inches possible.

Monday

A 20 percent chance of snow before noon. Partly sunny, with a high near 15. Blustery, with a northwest wind 14 to 23 mph, with gusts as high as 37 mph.

Monday Night

Partly cloudy, with a low around 4. Northwest wind 6 to 13 mph, with gusts as high as 22 mph.

Tuesday

Partly sunny, with a high near 28. West wind 6 to 10 mph, with gusts as high as 18 mph.

Tuesday Night

Mostly cloudy, with a low around 11. West wind around 9 mph, with gusts as high as 18 mph.

Wednesday

Mostly cloudy, with a high near 21. Northwest wind around 10 mph, with gusts as high as 18 mph.

Wednesday Night

Mostly cloudy, with a low around -1. Northwest wind around 8 mph.

New Year's Day

Sunny, with a high near 10. Northwest wind around 8 mph.