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

Alturas (KAAT)

Lat: 41.48362°NLon: 120.5615°WElev: 4383.0ft.

Overcast

39°F

4°C

Humidity	64%
Wind Speed	S 9 MPH
Barometer	29.74 in (1007.11 mb)
Dewpoint	28°F (-2°C)
Visibility	10.00 mi
Wind Chill	33°F (1°C)
Last update	25 Dec 04:20 PM PST

More Information:

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

Extended Forecast for

6 Miles SSE Canby CA

Winter Weather Advisory December 25, 04:37pm until December 26, 07:00am

Winter Storm Warning December 25, 04:37pm until December 26, 04:00pm

Click here for hazard details and duration

Winter Weather Advisory

Winter Storm Warning

Winter Weather Advisory December 25, 04:37pm until December 26, 07:00am
Winter Storm Warning December 25, 04:37pm until December 26, 04:00pm
NOW: Multiple hazards in effect
Click HERE for Details
Christmas Day
High: 36 °F
Snow Showers
Tonight
Low: 27 °F
Snow Showers
then Chance
Snow Showers
Friday
High: 34 °F
Snow Showers
Friday Night
Low: 25 °F
Snow Likely
then Chance
Snow
Saturday
High: 30 °F
Slight Chance
Snow
Saturday Night
Low: 19 °F
Partly Cloudy
Sunday
High: 32 °F
Mostly Sunny
Sunday Night
Low: 21 °F
Mostly Clear

Detailed Forecast

Christmas Day

Snow showers. High near 36. South wind around 11 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. Total daytime snow accumulation of 1 to 2 inches possible.

Tonight

Snow showers, mainly before midnight. Low around 27. South southwest wind 9 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

Friday

Snow showers before 4pm, then snow likely after 4pm. High near 34. Southwest wind 13 to 16 mph, with gusts as high as 32 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.

Friday Night

Snow likely, mainly before 10pm. Mostly cloudy, with a low around 25. West southwest wind 9 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.

Saturday

A 20 percent chance of snow. Mostly sunny, with a high near 30. Northwest wind 5 to 7 mph.

Saturday Night

Partly cloudy, with a low around 19.

Sunday

Mostly sunny, with a high near 32.

Sunday Night

Mostly clear, with a low around 21.

Monday

Sunny, with a high near 37.

Monday Night

Mostly clear, with a low around 25.