National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

ACTON (ATNC1)

Lat: 34.44639°NLon: 118.1968°WElev: 2600.0ft.

NA

60°F

16°C

Humidity 79%
Wind Speed S 33 MPH
Barometer NA
Dewpoint 53°F (12°C)
Visibility NA
Last update 24 Dec 06:54 AM PST
Extended Forecast for

10 Miles NNW Altadena CA

Flood Watch December 24, 07:33am until December 26, 04:00pm
Flood Advisory until December 24, 04:00pm
High Wind Warning December 24, 07:33am until December 25, 03:00pm
Flash Flood Warning until December 24, 12:00pm
Click here for hazard details and duration
Flood Watch
Flood Advisory
High Wind Warning
Flash Flood Warning
  •  
    Flood Watch December 24, 07:33am until December 26, 04:00pm
    Flood Advisory until December 24, 04:00pm
    High Wind Warning December 24, 07:33am until December 25, 03:00pm
    Flash Flood Warning until December 24, 12:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Today

    High: 47 °F

    Heavy Rain
    and Windy

  • Tonight

    Tonight: Showers. Low around 43. Windy, with a south wind around 30 mph, with gusts as high as 40 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

    Low: 43 °F

    Showers and
    Windy

  • Christmas Day

    Christmas Day: Showers and possibly a thunderstorm. High near 45. Breezy, with a south wind 20 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.

    High: 45 °F

    Showers and
    Breezy

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm. Low around 43. Breezy, with a south wind around 20 mph, with gusts as high as 35 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

    Low: 43 °F

    Showers and
    Breezy

  • Friday

    Friday: Showers. High near 44. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 44 °F

    Showers

  • Friday Night

    Friday Night: A 50 percent chance of showers, mainly before 4am. Mostly cloudy, with a low around 41.

    Low: 41 °F

    Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers before 10am, then a slight chance of rain after 10am. Partly sunny, with a high near 44. Chance of precipitation is 20%.

    High: 44 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

Detailed Forecast

Today
Rain and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 47. Windy, with a south wind 20 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 100%. New rainfall amounts in excess of 4 inches possible.
Tonight
Showers. Low around 43. Windy, with a south wind around 30 mph, with gusts as high as 40 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Christmas Day
Showers and possibly a thunderstorm. High near 45. Breezy, with a south wind 20 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.
Thursday Night
Showers and possibly a thunderstorm. Low around 43. Breezy, with a south wind around 20 mph, with gusts as high as 35 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Friday
Showers. High near 44. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Friday Night
A 50 percent chance of showers, mainly before 4am. Mostly cloudy, with a low around 41.
Saturday
A slight chance of showers before 10am, then a slight chance of rain after 10am. Partly sunny, with a high near 44. Chance of precipitation is 20%.
Saturday Night
Partly cloudy, with a low around 42.
Sunday
Sunny, with a high near 47. Breezy.
Sunday Night
Mostly clear, with a low around 45. Breezy.
Monday
Mostly sunny, with a high near 48. Breezy.
Monday Night
Partly cloudy, with a low around 48. Breezy.
Tuesday
A slight chance of rain. Partly sunny, with a high near 52. Breezy.
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ABOUT THIS FORECAST

 
Point Forecast:
10 Miles NNW Altadena CA
 34.33°N 118.22°W (Elev. 4711 ft)
Last Update:
1:07 am PST Dec 24, 2025
Forecast Valid:
7am PST Dec 24, 2025-6pm PST Dec 30, 2025
 
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Additional Resources

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