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 >

Hazardous Weather Conditions

Current conditions at

Alpine (K46U)

Lat: 43.1846°NLon: 111.0424°WElev: 5634.0ft.

Overcast

43°F

6°C

Humidity NA
Wind Speed ESE 12 MPH
Barometer 29.94 in (1013.89 mb)
Dewpoint N/A
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update NA
Extended Forecast for

8 Miles SSE Rafter J Ranch WY

  • Tonight

    Tonight: Rain showers before 5am, then rain, possibly mixed with snow showers. Some thunder is also possible. Low around 35. Breezy, with an east southeast wind 8 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

    Low: 35 °F

    Showers and
    Breezy then
    Rain/Snow

  • Christmas Day

    Christmas Day: Rain likely, possibly mixed with snow showers before 8am, then scattered rain showers between 8am and 11am, then scattered rain and snow showers after 11am. Some thunder is also possible. Partly sunny, with a high near 44. South wind 7 to 9 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 44 °F

    Rain/Snow
    Likely

  • Thursday Night

    Thursday Night: Scattered snow showers before 11pm, then snow showers, possibly mixed with rain between 11pm and 2am, then snow showers after 2am. Some thunder is also possible. Low around 32. South southwest wind 7 to 9 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    Low: 32 °F

    Rain/Snow

  • Friday

    Friday: Snow showers. Some thunder is also possible. High near 38. Southwest wind around 11 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.

    High: 38 °F

    Snow Showers

  • Friday Night

    Friday Night: Snow showers. Low around 21. Southwest wind around 9 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    Low: 21 °F

    Snow Showers

  • Saturday

    Saturday: Snow showers. Some thunder is also possible. High near 32. West southwest wind around 11 mph, with gusts as high as 22 mph. Chance of precipitation is 80%.

    High: 32 °F

    Snow Showers

  • Saturday Night

    Saturday Night: A 40 percent chance of snow showers before 11pm. Mostly cloudy, with a low around 5. West wind 5 to 7 mph.

    Low: 5 °F

    Chance Snow
    Showers then
    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 26.

    High: 26 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 5.

    Low: 5 °F

    Mostly Clear

Detailed Forecast

Tonight
Rain showers before 5am, then rain, possibly mixed with snow showers. Some thunder is also possible. Low around 35. Breezy, with an east southeast wind 8 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Christmas Day
Rain likely, possibly mixed with snow showers before 8am, then scattered rain showers between 8am and 11am, then scattered rain and snow showers after 11am. Some thunder is also possible. Partly sunny, with a high near 44. South wind 7 to 9 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Thursday Night
Scattered snow showers before 11pm, then snow showers, possibly mixed with rain between 11pm and 2am, then snow showers after 2am. Some thunder is also possible. Low around 32. South southwest wind 7 to 9 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Friday
Snow showers. Some thunder is also possible. High near 38. Southwest wind around 11 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.
Friday Night
Snow showers. Low around 21. Southwest wind around 9 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Saturday
Snow showers. Some thunder is also possible. High near 32. West southwest wind around 11 mph, with gusts as high as 22 mph. Chance of precipitation is 80%.
Saturday Night
A 40 percent chance of snow showers before 11pm. Mostly cloudy, with a low around 5. West wind 5 to 7 mph.
Sunday
Mostly sunny, with a high near 26.
Sunday Night
Mostly clear, with a low around 5.
Monday
Sunny, with a high near 34.
Monday Night
Mostly clear, with a low around 11.
Tuesday
Mostly sunny, with a high near 39.
Tuesday Night
Partly cloudy, with a low around 14.
Wednesday
Sunny, with a high near 42.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
8 Miles SSE Rafter J Ranch WY
 43.31°N 110.72°W (Elev. 6818 ft)
Last Update:
7:32 pm MST Dec 24, 2025
Forecast Valid:
7pm MST Dec 24, 2025-6pm MST Dec 31, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation