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

RONAN (RONM8)

Lat: 47.53639°NLon: 114.09889°WElev: 3068.0ft.

NA

36°F

2°C

Humidity 100%
Wind Speed WNW 0 MPH
Barometer NA
Dewpoint 36°F (2°C)
Visibility NA
Last update 24 Dec 10:31 AM MST
Extended Forecast for

9 Miles E St. Ignatius MT

  • Today

    Today: Snow likely, mainly after 5pm.  Mostly cloudy, with a high near 31. South wind 18 to 20 mph, with gusts as high as 29 mph.  Chance of precipitation is 60%. Total daytime snow accumulation of less than a half inch possible.

    High: 31 °F

    Snow Likely

  • Tonight

    Tonight: Snow likely, mainly before 2am. The snow could be heavy at times.  Cloudy, with a low around 24. Southwest wind 10 to 18 mph, with gusts as high as 25 mph.  Chance of precipitation is 70%. New snow accumulation of 2 to 4 inches possible.

    Low: 24 °F

    Heavy Snow

  • Christmas Day

    Christmas Day: Snow likely, mainly after 11am.  Mostly cloudy, with a high near 27. Southwest wind 10 to 14 mph, with gusts as high as 18 mph.  Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 27 °F

    Snow Likely

  • Thursday Night

    Thursday Night: Snow likely.  Mostly cloudy, with a low around 21. West wind 16 to 20 mph becoming north in the evening. Winds could gust as high as 28 mph.  Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.

    Low: 21 °F

    Snow Likely

  • Friday

    Friday: Snow. The snow could be heavy at times.  High near 23. Breezy, with a southwest wind 17 to 22 mph, with gusts as high as 33 mph.  Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.

    High: 23 °F

    Heavy Snow
    and Breezy

  • Friday Night

    Friday Night: Snow.  Low around 11. Windy.  Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.

    Low: 11 °F

    Snow and
    Windy

  • Saturday

    Saturday: Snow likely, mainly before 11am.  Mostly cloudy, with a high near 13. Breezy.  Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

    High: 13 °F

    Snow Likely
    and Breezy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 5.

    Low: 5 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 15.

    High: 15 °F

    Mostly Cloudy

Detailed Forecast

Today
Snow likely, mainly after 5pm. Mostly cloudy, with a high near 31. South wind 18 to 20 mph, with gusts as high as 29 mph. Chance of precipitation is 60%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Snow likely, mainly before 2am. The snow could be heavy at times. Cloudy, with a low around 24. Southwest wind 10 to 18 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New snow accumulation of 2 to 4 inches possible.
Christmas Day
Snow likely, mainly after 11am. Mostly cloudy, with a high near 27. Southwest wind 10 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Thursday Night
Snow likely. Mostly cloudy, with a low around 21. West wind 16 to 20 mph becoming north in the evening. Winds could gust as high as 28 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.
Friday
Snow. The snow could be heavy at times. High near 23. Breezy, with a southwest wind 17 to 22 mph, with gusts as high as 33 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 7 inches possible.
Friday Night
Snow. Low around 11. Windy. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.
Saturday
Snow likely, mainly before 11am. Mostly cloudy, with a high near 13. Breezy. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
Saturday Night
Mostly cloudy, with a low around 5.
Sunday
Mostly cloudy, with a high near 15.
Sunday Night
Mostly cloudy, with a low around 9.
Monday
Partly sunny, with a high near 17.
Monday Night
Mostly cloudy, with a low around 13.
Tuesday
Mostly cloudy, with a high near 22.
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ABOUT THIS FORECAST

 
Point Forecast:
9 Miles E St. Ignatius MT
 47.31°N 113.9°W (Elev. 8199 ft)
1:02 am MST Dec 24, 2025
11am MST Dec 24, 2025-6pm MST Dec 30, 2025
 
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Additional Resources

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