Heavy Rainfall to Bring Flooding Threat to California; Heavy Snow in the Sierra

A strong atmospheric river will bring heavy rainfall to California through the holiday week. The heaviest rainfall is expected on Wednesday in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall is expected in the Sierra Nevada from the atmospheric river, raising concerns for major snow‐load impacts. Travel may be difficult to impossible over the passes. Read More >

Current conditions at

Nephi Municipal Airport (KU14)

Lat: 39.7386°NLon: 111.8722°WElev: 5022.0ft.

Overcast

52°F

11°C

Humidity 43%
Wind Speed S 6 MPH
Barometer 30.11 in (1019.64 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 24 Dec 01:35 AM MST
Extended Forecast for

5 Miles ESE Mona UT

  • Overnight

    Overnight: Partly cloudy, with a low around 35. South southeast wind around 13 mph.

    Low: 35 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of rain, mainly after 2pm.  Mostly cloudy, with a high near 43. Southeast wind around 16 mph, with gusts as high as 30 mph.

    High: 43 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: Rain before 2am, then rain, possibly mixed with snow.  Low around 38. South southeast wind 18 to 21 mph, with gusts as high as 37 mph.  Chance of precipitation is 90%. Little or no snow accumulation expected.

    Low: 38 °F

    Rain then
    Rain/Snow

  • Christmas Day

    Christmas Day: Rain, possibly mixed with snow, becoming all snow after 8am. Some thunder is also possible.  High near 40. Breezy, with a south wind 18 to 23 mph, with gusts as high as 40 mph.  Chance of precipitation is 80%. Little or no snow accumulation expected.

    High: 40 °F

    Rain/Snow
    then Snow
    Likely and
    Breezy

  • Thursday Night

    Thursday Night: A 30 percent chance of snow, mainly after 11pm.  Mostly cloudy, with a low around 32. South southwest wind 14 to 17 mph, with gusts as high as 37 mph.  New snow accumulation of less than a half inch possible.

    Low: 32 °F

    Chance Snow

  • Friday

    Friday: Snow, mainly between 11am and 2pm, then snow showers after 2pm. Some thunder is also possible.  High near 34. Breezy.  Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    High: 34 °F

    Snow and
    Breezy

  • Friday Night

    Friday Night: Snow showers. Some thunder is also possible.  Low around 24. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.

    Low: 24 °F

    Snow Showers

  • Saturday

    Saturday: A chance of snow.  Partly sunny, with a high near 26.

    High: 26 °F

    Chance Snow

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 17.

    Low: 17 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 35. South southeast wind around 13 mph.
Wednesday
A 30 percent chance of rain, mainly after 2pm. Mostly cloudy, with a high near 43. Southeast wind around 16 mph, with gusts as high as 30 mph.
Wednesday Night
Rain before 2am, then rain, possibly mixed with snow. Low around 38. South southeast wind 18 to 21 mph, with gusts as high as 37 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Christmas Day
Rain, possibly mixed with snow, becoming all snow after 8am. Some thunder is also possible. High near 40. Breezy, with a south wind 18 to 23 mph, with gusts as high as 40 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Thursday Night
A 30 percent chance of snow, mainly after 11pm. Mostly cloudy, with a low around 32. South southwest wind 14 to 17 mph, with gusts as high as 37 mph. New snow accumulation of less than a half inch possible.
Friday
Snow, mainly between 11am and 2pm, then snow showers after 2pm. Some thunder is also possible. High near 34. Breezy. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Friday Night
Snow showers. Some thunder is also possible. Low around 24. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.
Saturday
A chance of snow. Partly sunny, with a high near 26.
Saturday Night
Mostly clear, with a low around 17.
Sunday
Sunny, with a high near 25.
Sunday Night
Mostly clear, with a low around 18.
Monday
Sunny, with a high near 27.
Monday Night
Partly cloudy, with a low around 21.
Tuesday
Mostly sunny, with a high near 32.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles ESE Mona UT
 39.79°N 111.77°W (Elev. 8698 ft)
2:04 pm MST Dec 23, 2025
2am MST Dec 24, 2025-6pm MST Dec 30, 2025
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database