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 >

Current conditions at

USCRN SITE NEAR ST. MARY 1SSW (MRYM8)

Lat: 48.74111°NLon: 113.43306°WElev: 4550.0ft.

10°F

-12°C

Humidity	83%
Wind Speed	NA 4 MPH
Barometer	NA
Dewpoint	6°F (-14°C)
Visibility	NA
Wind Chill	3°F (-16°C)
Last update	24 Dec 05:10 PM MST

More Information:

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

Extended Forecast for

6 Miles W St Mary MT

This Afternoon
High: 32 °F
Chance Snow
Tonight
Low: 23 °F
Chance Snow
Christmas Day
High: 30 °F
Chance Snow
Thursday Night
Low: 25 °F
Chance Snow
Friday
High: 26 °F
Snow Likely
and Breezy
Friday Night
Low: -4 °F
Heavy Snow
and Breezy
Saturday
High: 3 °F
Snow then
Chance Snow
Saturday Night
Low: -2 °F
Partly Cloudy
Sunday
High: 14 °F
Mostly Sunny
then Mostly
Sunny and
Breezy

Detailed Forecast

This Afternoon

A 30 percent chance of snow. Mostly cloudy, with a high near 32. South southwest wind around 10 mph. Total daytime snow accumulation of less than a half inch possible.

Tonight

A 50 percent chance of snow. Mostly cloudy, with a low around 23. West southwest wind 11 to 16 mph, with gusts as high as 28 mph. New snow accumulation of less than one inch possible.

Christmas Day

A 30 percent chance of snow. Mostly sunny, with a high near 30. Southwest wind 14 to 17 mph, with gusts as high as 30 mph. New snow accumulation of less than a half inch possible.

Thursday Night

A 50 percent chance of snow. Mostly cloudy, with a low around 25. West southwest wind 18 to 20 mph, with gusts as high as 37 mph. New snow accumulation of 1 to 3 inches possible.

Friday

Snow likely, mainly after 11am. Mostly cloudy, with a high near 26. Breezy, with a west southwest wind around 23 mph, with gusts as high as 41 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.

Friday Night

Snow. The snow could be heavy at times. Low around -4. Breezy, with a southwest wind 21 to 25 mph, with gusts as high as 45 mph. Chance of precipitation is 90%. New snow accumulation of 4 to 8 inches possible.

Saturday

Snow, mainly before 11am. High near 3. North wind 8 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

Saturday Night

Partly cloudy, with a low around -2. Northwest wind 6 to 16 mph becoming southwest in the evening. Winds could gust as high as 25 mph.

Sunday

Mostly sunny, with a high near 14. Breezy.

Sunday Night

Mostly cloudy, with a low around 13. Breezy.

Monday

Partly sunny, with a high near 23. Breezy.

Monday Night

Mostly cloudy, with a low around 19. Breezy.

Tuesday

Mostly cloudy, with a high near 26. Breezy.