National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

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

Dellwo (DELMT)

Lat: 47.98488°NLon: 112.60533°WElev: 4711.0ft.

NA

48°F

9°C

Humidity 49%
Wind Speed N 11 MPH
Barometer NA
Dewpoint 30°F (-1°C)
Visibility NA
Wind Chill43°F (6°C)
Last update 25 Dec 11:45 AM MST
Extended Forecast for

16 Miles W Bynum MT

  • Christmas Day

    Christmas Day: Sunny, with a high near 45. Southwest wind around 10 mph, with gusts as high as 24 mph.

    High: 45 °F

    Sunny

  • Tonight

    Tonight: A chance of rain and snow before 1am, then a slight chance of snow after 5am. Mostly cloudy, with a steady temperature around 39. Southwest wind 10 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.

    Low: 39 °F

    Chance
    Rain/Snow
    then Chance
    Snow

  • Friday

    Friday: Snow likely, mainly after 11am. Partly sunny, with a high near 43. Breezy, with a southwest wind 10 to 15 mph increasing to 23 to 28 mph in the afternoon. Winds could gust as high as 50 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 43 °F

    Snow Likely
    and Breezy

  • Friday Night

    Friday Night: Snow likely. Mostly cloudy, with a low around 7. West southwest wind 18 to 21 mph, with gusts as high as 38 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.

    Low: 7 °F

    Snow Likely

  • Saturday

    Saturday: Snow. High near 24. North northwest wind 14 to 18 mph, with gusts as high as 33 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    High: 24 °F

    Snow

  • Saturday Night

    Saturday Night: A 20 percent chance of snow before 11pm. Partly cloudy, with a low around 4. North northwest wind 5 to 8 mph becoming west southwest in the evening. Winds could gust as high as 18 mph.

    Low: 4 °F

    Slight Chance
    Snow then
    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 30. West wind 7 to 13 mph, with gusts as high as 25 mph.

    High: 30 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 23. West wind 14 to 21 mph, with gusts as high as 33 mph.

    Low: 23 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 41.

    High: 41 °F

    Partly Sunny

Detailed Forecast

Christmas Day
Sunny, with a high near 45. Southwest wind around 10 mph, with gusts as high as 24 mph.
Tonight
A chance of rain and snow before 1am, then a slight chance of snow after 5am. Mostly cloudy, with a steady temperature around 39. Southwest wind 10 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 40%. Little or no snow accumulation expected.
Friday
Snow likely, mainly after 11am. Partly sunny, with a high near 43. Breezy, with a southwest wind 10 to 15 mph increasing to 23 to 28 mph in the afternoon. Winds could gust as high as 50 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Friday Night
Snow likely. Mostly cloudy, with a low around 7. West southwest wind 18 to 21 mph, with gusts as high as 38 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.
Saturday
Snow. High near 24. North northwest wind 14 to 18 mph, with gusts as high as 33 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Saturday Night
A 20 percent chance of snow before 11pm. Partly cloudy, with a low around 4. North northwest wind 5 to 8 mph becoming west southwest in the evening. Winds could gust as high as 18 mph.
Sunday
Mostly sunny, with a high near 30. West wind 7 to 13 mph, with gusts as high as 25 mph.
Sunday Night
Partly cloudy, with a low around 23. West wind 14 to 21 mph, with gusts as high as 33 mph.
Monday
Partly sunny, with a high near 41.
Monday Night
Mostly cloudy, with a low around 31. Breezy.
Tuesday
Partly sunny, with a high near 47.
Tuesday Night
A slight chance of snow. Mostly cloudy, with a low around 30.
Wednesday
A slight chance of snow. Partly sunny, with a high near 45.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
16 Miles W Bynum MT
 47.97°N 112.65°W (Elev. 5000 ft)
Last Update:
10:07 am MST Dec 25, 2025
Forecast Valid:
12pm MST Dec 25, 2025-6pm MST Dec 31, 2025
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation