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

Brigham City Regional Airport (KBMC)

Lat: 41.5464°NLon: 112.0601°WElev: 4230.0ft.

Clear

55°F

13°C

Humidity 47%
Wind Speed S 16 MPH
Barometer 30.0 in (1015.92 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 24 Dec 09:15 AM MST
Extended Forecast for

3 Miles SSW Mendon UT

  • Today

    Today: Rain likely, mainly after 2pm. Mostly cloudy, with a steady temperature around 55. Breezy, with a south wind 20 to 23 mph. Chance of precipitation is 70%.

    High: 55 °F

    Chance Rain
    and Breezy
    then Rain
    Likely

  • Tonight

    Tonight: Rain before 2am, then showers and possibly a thunderstorm after 2am. Low around 43. Windy, with a south wind 24 to 30 mph, with gusts as high as 40 mph. Chance of precipitation is 100%.

    Low: 43 °F

    Showers and
    Windy

  • Christmas Day

    Christmas Day: Showers and possibly a thunderstorm. Temperature falling to around 44 by 8am. Breezy, with a south southwest wind 23 to 29 mph, with gusts as high as 39 mph. Chance of precipitation is 90%.

    High: 48 °F⇓

    Showers and
    Breezy

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm, then rain after 8pm. Low around 38. Breezy, with a south wind 22 to 29 mph, with gusts as high as 39 mph. Chance of precipitation is 80%.

    Low: 38 °F

    Showers and
    Breezy

  • Friday

    Friday: Rain showers likely before 8am, then rain and snow showers. Some thunder is also possible. High near 44. Breezy, with a south wind 24 to 29 mph decreasing to 18 to 23 mph in the afternoon. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    High: 44 °F

    Rain/Snow and
    Breezy

  • Friday Night

    Friday Night: Snow likely, mainly before 11pm. Mostly cloudy, with a low around 30. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Low: 30 °F

    Snow Likely
    then Chance
    Snow

  • Saturday

    Saturday: A 30 percent chance of snow. Partly sunny, with a high near 35. Little or no snow accumulation expected.

    High: 35 °F

    Chance Snow

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 24.

    Low: 24 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 32.

    High: 32 °F

    Sunny

Detailed Forecast

Today
Rain likely, mainly after 2pm. Mostly cloudy, with a steady temperature around 55. Breezy, with a south wind 20 to 23 mph. Chance of precipitation is 70%.
Tonight
Rain before 2am, then showers and possibly a thunderstorm after 2am. Low around 43. Windy, with a south wind 24 to 30 mph, with gusts as high as 40 mph. Chance of precipitation is 100%.
Christmas Day
Showers and possibly a thunderstorm. Temperature falling to around 44 by 8am. Breezy, with a south southwest wind 23 to 29 mph, with gusts as high as 39 mph. Chance of precipitation is 90%.
Thursday Night
Showers likely and possibly a thunderstorm, then rain after 8pm. Low around 38. Breezy, with a south wind 22 to 29 mph, with gusts as high as 39 mph. Chance of precipitation is 80%.
Friday
Rain showers likely before 8am, then rain and snow showers. Some thunder is also possible. High near 44. Breezy, with a south wind 24 to 29 mph decreasing to 18 to 23 mph in the afternoon. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Friday Night
Snow likely, mainly before 11pm. Mostly cloudy, with a low around 30. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Saturday
A 30 percent chance of snow. Partly sunny, with a high near 35. Little or no snow accumulation expected.
Saturday Night
Partly cloudy, with a low around 24.
Sunday
Sunny, with a high near 32.
Sunday Night
Mostly clear, with a low around 25.
Monday
Sunny, with a high near 34.
Monday Night
Partly cloudy, with a low around 27.
Tuesday
Sunny, with a high near 37.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSW Mendon UT
 41.67°N 111.99°W (Elev. 6050 ft)
Last Update:
2:03 am MST Dec 24, 2025
Forecast Valid:
9am MST Dec 24, 2025-6pm MST Dec 30, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation