Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

WY28 - South Pass (KSOU)

Lat: 42.47752°NLon: 108.8444°WElev: 8196.0ft.

36°F

2°C

Humidity	78%
Wind Speed	W 13 MPH
Barometer	NA
Dewpoint	29°F (-2°C)
Visibility	NA
Wind Chill	27°F (-3°C)
Last update	25 Dec 04:26 PM MST

More Information:

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

Extended Forecast for

18 Miles SE Boulder WY

Christmas Day
High: 40 °F
Isolated
Rain/Snow
Tonight
Low: 28 °F
Scattered
Rain/Snow
then Isolated
Snow Showers
Friday
High: 39 °F
Snow Showers
Likely and
Windy
Friday Night
Low: 20 °F
Snow Showers
Likely and
Breezy
Saturday
High: 30 °F
Chance Snow
Showers and
Breezy
Saturday Night
Low: 1 °F
Chance Snow
Showers
Sunday
High: 21 °F
Sunny
Sunday Night
Low: 3 °F
Mostly Clear
Monday
High: 28 °F
Sunny

Detailed Forecast

Christmas Day

A slight chance of rain and snow showers. Mostly cloudy, with a high near 40. West wind around 14 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

Tonight

Scattered rain and snow showers before midnight, then a slight chance of snow showers after 4am. Mostly cloudy, with a low around 28. West wind around 10 mph becoming south in the evening. Chance of precipitation is 30%.

Friday

Snow showers likely, mainly after 9am. Cloudy, with a high near 39. Windy, with a south southwest wind 15 to 20 mph increasing to 21 to 26 mph in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

Friday Night

Snow showers likely, mainly before 9pm. Cloudy, with a low around 20. Breezy, with a west southwest wind 9 to 17 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.

Saturday

A 40 percent chance of snow showers. Mostly cloudy, with a high near 30. Breezy, with a west southwest wind 9 to 18 mph, with gusts as high as 30 mph. New snow accumulation of less than a half inch possible.

Saturday Night

A 30 percent chance of snow showers. Partly cloudy, with a low around 1. North wind 6 to 13 mph, with gusts as high as 22 mph.

Sunday

Sunny, with a high near 21. West northwest wind 6 to 10 mph.

Sunday Night

Mostly clear, with a low around 3.

Monday

Sunny, with a high near 28.

Monday Night

Mostly clear, with a low around 12.

Tuesday

Mostly sunny, with a high near 35.