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

Current conditions at

Mount Shasta (KMHS)

Lat: 41.31494°NLon: 122.31702°WElev: 3540.0ft.

rain,mist

40°F

4°C

Humidity	92%
Wind Speed	N 0 MPH
Barometer	29.44 in (996.95 mb)
Dewpoint	38°F (3°C)
Visibility	4.00 mi
Last update	25 Dec 05:56 AM PST

More Information:

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

Extended Forecast for

Mount Shasta CA

Winter Storm Warning December 25, 06:38am until December 26, 10:00am

Click here for hazard details and duration

Winter Storm Warning

Winter Storm Warning December 25, 06:38am until December 26, 10:00am
NOW until 10:00am Fri
Winter Storm Warning
Christmas Day
High: 41 °F
Rain/Snow and
Breezy
Tonight
Low: 29 °F
Heavy Snow
Friday
High: 39 °F
Rain/Snow
Friday Night
Low: 24 °F
Rain/Snow
Likely then
Chance Snow
Saturday
High: 39 °F
Slight Chance
Snow
Saturday Night
Low: 19 °F
Partly Cloudy
Sunday
High: 43 °F
Mostly Sunny
Sunday Night
Low: 23 °F
Mostly Clear

Detailed Forecast

Christmas Day

Snow showers, possibly mixed with rain. Snow level 4300 feet lowering to 3700 feet in the afternoon . High near 41. Breezy, with a south southeast wind 16 to 23 mph, with gusts as high as 34 mph. Chance of precipitation is 100%. Total daytime snow accumulation of less than one inch possible.

Tonight

Snow showers. The snow could be heavy at times. Low around 29. Southeast wind around 14 mph, with gusts as high as 21 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.

Friday

Rain and snow, becoming all rain after 4pm. Snow level 3700 feet. High near 39. South southeast wind 9 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

Friday Night

Rain likely before 7pm, then rain and snow likely between 7pm and 10pm, then a chance of snow after 10pm. Mostly cloudy, with a low around 24. Calm wind. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

Saturday

A 20 percent chance of snow. Mostly sunny, with a high near 39. Calm wind.

Saturday Night

Partly cloudy, with a low around 19.

Sunday

Mostly sunny, with a high near 43.

Sunday Night

Mostly clear, with a low around 23.

Monday

Sunny, with a high near 49.

Monday Night

Mostly clear, with a low around 27.