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

Geyser (MTGYS)

Lat: 47.25°NLon: 110.48°WElev: 4221.0ft.

NA

55°F

13°C

Humidity 25%
Wind Speed WSW 22 MPH
Barometer NA
Dewpoint 20°F (-7°C)
Visibility NA
Last update 25 Dec 01:30 PM MST
Extended Forecast for

Geraldine MT

  • Christmas Day

    Christmas Day: Mostly sunny, with a high near 51. South wind around 6 mph.

    High: 51 °F

    Mostly Sunny

  • Tonight

    Tonight: A slight chance of rain between 11pm and 2am. Mostly cloudy, with a low around 31. South wind 6 to 8 mph. Chance of precipitation is 20%.

    Low: 31 °F

    Slight Chance
    Rain

  • Friday

    Friday: A slight chance of rain between 10am and 4pm. Mostly sunny, with a high near 52. West southwest wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 33 mph. Chance of precipitation is 20%.

    High: 52 °F

    Slight Chance
    Rain

  • Friday Night

    Friday Night: A 20 percent chance of snow after 11pm. Increasing clouds, with a low around 9. West southwest wind around 14 mph becoming north northwest after midnight. Winds could gust as high as 20 mph.

    Low: 9 °F

    Slight Chance
    Snow

  • Saturday

    Saturday: A 50 percent chance of snow. Mostly cloudy, with a high near 20. Blustery, with a northwest wind 17 to 22 mph, with gusts as high as 30 mph. New snow accumulation of less than a half inch possible.

    High: 20 °F

    Chance Snow
    and Blustery

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around -2. West wind 10 to 18 mph, with gusts as high as 25 mph.

    Low: -2 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 25. West wind around 6 mph becoming light and variable in the morning.

    High: 25 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 14. Southwest wind around 6 mph.

    Low: 14 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 42.

    High: 42 °F

    Mostly Sunny

Detailed Forecast

Christmas Day
Mostly sunny, with a high near 51. South wind around 6 mph.
Tonight
A slight chance of rain between 11pm and 2am. Mostly cloudy, with a low around 31. South wind 6 to 8 mph. Chance of precipitation is 20%.
Friday
A slight chance of rain between 10am and 4pm. Mostly sunny, with a high near 52. West southwest wind 10 to 15 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 33 mph. Chance of precipitation is 20%.
Friday Night
A 20 percent chance of snow after 11pm. Increasing clouds, with a low around 9. West southwest wind around 14 mph becoming north northwest after midnight. Winds could gust as high as 20 mph.
Saturday
A 50 percent chance of snow. Mostly cloudy, with a high near 20. Blustery, with a northwest wind 17 to 22 mph, with gusts as high as 30 mph. New snow accumulation of less than a half inch possible.
Saturday Night
Partly cloudy, with a low around -2. West wind 10 to 18 mph, with gusts as high as 25 mph.
Sunday
Mostly sunny, with a high near 25. West wind around 6 mph becoming light and variable in the morning.
Sunday Night
Partly cloudy, with a low around 14. Southwest wind around 6 mph.
Monday
Mostly sunny, with a high near 42.
Monday Night
Mostly cloudy, with a low around 28.
Tuesday
Partly sunny, with a high near 48.
Tuesday Night
Mostly cloudy, with a low around 26.
Wednesday
A slight chance of rain and snow. Mostly cloudy, with a high near 43.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Geraldine MT
 47.6°N 110.26°W (Elev. 3192 ft)
Last Update:
1:27 pm MST Dec 25, 2025
Forecast Valid:
1pm MST Dec 25, 2025-6pm MST Dec 31, 2025
 
Forecast Discussion
 
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Additional Resources

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