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

Ukiah Municipal Airport (KUKI)

Lat: 39.12783°NLon: 123.20011°WElev: 597.0ft.

light rain,mist

50°F

10°C

Humidity 89%
Wind Speed SSE 8 MPH
Barometer 29.71 in (1006.1 mb)
Dewpoint 47°F (8°C)
Visibility 6.00 mi
Wind Chill47°F (8°C)
Last update 25 Dec 02:23 PM PST
Extended Forecast for

Calpella CA

Flood Watch December 25, 02:42pm until December 26, 10:00pm
Wind Advisory December 25, 02:42pm until December 26, 10:00am
Click here for hazard details and duration
Flood Watch
Wind Advisory
  •  
    Flood Watch December 25, 02:42pm until December 26, 10:00pm
    Wind Advisory December 25, 02:42pm until December 26, 10:00am

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Christmas Day

    High: 51 °F

    Showers and
    Breezy

  • Tonight

    Tonight: Showers and possibly a thunderstorm. Low around 41. Breezy, with a south wind 8 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 41 °F

    Showers and
    Breezy

  • Friday

    Friday: Showers. High near 52. South southeast wind 9 to 11 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 52 °F

    Showers

  • Friday Night

    Friday Night: Showers likely, mainly before 10pm. Mostly cloudy, with a low around 34. Northeast wind 5 to 11 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 34 °F

    Showers
    Likely then
    Chance
    Showers

  • Saturday

    Saturday: Patchy fog before 10am. Otherwise, sunny, with a high near 53. Calm wind.

    High: 53 °F

    Patchy Fog
    then Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 10pm. Otherwise, partly cloudy, with a low around 32. Calm wind.

    Low: 32 °F

    Patchy Fog

  • Sunday

    Sunday: Patchy fog before 10am. Otherwise, mostly sunny, with a high near 59.

    High: 59 °F

    Patchy Fog
    then Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear

Detailed Forecast

Christmas Day
Showers and possibly a thunderstorm. High near 51. Breezy, with a south wind around 18 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and possibly a thunderstorm. Low around 41. Breezy, with a south wind 8 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Friday
Showers. High near 52. South southeast wind 9 to 11 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
Showers likely, mainly before 10pm. Mostly cloudy, with a low around 34. Northeast wind 5 to 11 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Patchy fog before 10am. Otherwise, sunny, with a high near 53. Calm wind.
Saturday Night
Patchy fog after 10pm. Otherwise, partly cloudy, with a low around 32. Calm wind.
Sunday
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 59.
Sunday Night
Mostly clear, with a low around 34.
Monday
Sunny, with a high near 63.
Monday Night
Mostly clear, with a low around 37.
Tuesday
Sunny, with a high near 66.
Tuesday Night
Mostly clear, with a low around 38.
Wednesday
Sunny, with a high near 65.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Calpella CA
 39.25°N 123.21°W (Elev. 797 ft)
Last Update:
1:10 pm PST Dec 25, 2025
Forecast Valid:
2pm PST Dec 25, 2025-6pm PST Dec 31, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation