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

Loma US-87 MP 53.1 (MTLOM)

Lat: 47.95103°NLon: 110.50477°WElev: 2700.0ft.

23°F

-5°C

Humidity	NA
Wind Speed	SW 2 MPH
Barometer	NA
Dewpoint	N/A
Visibility	NA
Last update	NA

More Information:

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

Extended Forecast for

Fort Benton MT

Dense Fog Advisory December 25, 03:46am until December 25, 09:00am

Winter Weather Advisory December 25, 03:46am until December 25, 05:00am

Click here for hazard details and duration

Dense Fog Advisory

Winter Weather Advisory

Dense Fog Advisory December 25, 03:46am until December 25, 09:00am
Winter Weather Advisory December 25, 03:46am until December 25, 05:00am
NOW: Multiple hazards in effect
Click HERE for Details
Overnight
Low: 20 °F
Wintry Mix
Likely and
Patchy Dense
Fog
Christmas Day
High: 45 °F
Patchy Fog
then Sunny
Thursday Night
Low: 28 °F
Mostly Cloudy
Friday
High: 51 °F
Partly Sunny
Friday Night
Low: 7 °F
Slight Chance
Snow
Saturday
High: 27 °F
Chance Snow
then Slight
Chance Snow
Saturday Night
Low: -4 °F
Partly Cloudy
Sunday
High: 26 °F
Mostly Sunny

Detailed Forecast

Overnight

Freezing rain likely before 4am, then a chance of snow between 4am and 5am, then a chance of snow and freezing rain after 5am. Patchy dense fog. Otherwise, mostly cloudy, with a low around 20. Light north northwest wind. Chance of precipitation is 60%. Total nighttime ice accumulation of less than a 0.1 of an inch possible. Little or no snow accumulation expected.

Christmas Day

Patchy fog before 11am. Otherwise, mostly sunny, with a high near 45. Calm wind becoming southwest around 6 mph in the afternoon.

Thursday Night

Mostly cloudy, with a low around 28. South southeast wind around 7 mph becoming west southwest in the evening.

Friday

Partly sunny, with a high near 51. South southwest wind 7 to 11 mph, with gusts as high as 18 mph.

Friday Night

A 20 percent chance of snow after 11pm. Mostly cloudy, with a low around 7. Southwest wind 10 to 13 mph, with gusts as high as 20 mph.

Saturday

A 50 percent chance of snow, mainly before 11am. Mostly cloudy, with a high near 27. Northwest wind 14 to 16 mph, with gusts as high as 23 mph. New snow accumulation of less than a half inch possible.

Saturday Night

Partly cloudy, with a low around -4. West wind 6 to 14 mph, with gusts as high as 20 mph.

Sunday

Mostly sunny, with a high near 26. Calm wind becoming southwest around 6 mph in the afternoon.

Sunday Night

Partly cloudy, with a low around 15.

Monday

Mostly sunny, with a high near 42.

Monday Night

Mostly cloudy, with a low around 26.

Tuesday

Partly sunny, with a high near 45.