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

BEACH (K20U)

Lat: 46.93° N Lon: 103.98° W Elev: 2756 ft.

28°F

-2°C

Humidity 100%
Wind Speed N 6 mph
Barometer 30.01 in
Dewpoint 28°F (-2°C)
Visibility NA
Wind Chill21°F (-6°C)
Last update 24 Dec 7:55 am MST
Detailed forecast for

Billings County

Rest Of Today
Patchy fog early in the morning. Partly sunny. Highs in the mid 30s. East winds 5 to 10 mph.
Tonight
Mostly cloudy. Patchy fog. Lows in the lower 20s. Southeast winds 10 to 15 mph.
Christmas Day
Decreasing clouds. Patchy fog in the morning. Highs in the lower 40s. Southeast winds 5 to 10 mph, becoming southwest in the afternoon.
Thursday Night
Decreasing clouds. Lows in the mid 20s. Southwest winds around 5 mph.
Friday
Mostly sunny. Highs in the upper 40s. Southwest winds 5 to 10 mph.
Friday Night
Mostly cloudy in the evening then clearing. Lows in the lower 20s.
Saturday
Mostly sunny. Highs in the lower 30s.
Saturday Night
Partly cloudy. Lows around 5 below.
Sunday
Sunny. Highs around 10.
Sunday Night
Partly cloudy in the evening then clearing. Lows zero to 5 above.
Monday
Mostly sunny. Highs in the lower 30s.
Monday Night
Decreasing clouds. Lows around 20.
Tuesday
Mostly sunny with a 20 percent chance of snow. Highs in the upper 30s.



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737 AM MST Wed Dec 24 2025
 
 

Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database