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

55°F

13°C

Humidity 17%
Wind Speed NE 10 MPH
Barometer NA
Dewpoint 11°F (-12°C)
Visibility NA
Last update 29 Dec 11:54 PM PST
Extended Forecast for

9 Miles NNW Altadena CA

Wind Advisory December 30, 12:18am until December 30, 03:00pm
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory December 30, 12:18am until December 30, 03:00pm

    NOW until 3:00pm Tue

    Wind Advisory

  • Overnight

    Low: 47 °F

    Mostly Cloudy
    and Breezy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 58. Breezy, with a northeast wind 15 to 25 mph, with gusts as high as 35 mph.

    High: 58 °F

    Mostly Cloudy
    and Breezy

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers, mainly after 4am. Mostly cloudy, with a low around 47. Northeast wind around 15 mph, with gusts as high as 25 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 47 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Showers likely, mainly after 10am. Cloudy, with a high near 56. East wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 56 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Rain. Low around 46. East wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

    Low: 46 °F

    Rain

  • New Year's Day

    New Year's Day: Rain. High near 53. Chance of precipitation is 90%.

    High: 53 °F

    Rain

  • Thursday Night

    Thursday Night: Showers likely, mainly before 10pm. Mostly cloudy, with a low around 47. Chance of precipitation is 60%.

    Low: 47 °F

    Showers
    Likely

  • Friday

    Friday: Showers likely, mainly after 10am. Cloudy, with a high near 54.

    High: 54 °F

    Showers
    Likely

Detailed Forecast

Overnight
Mostly cloudy, with a low around 47. Breezy, with a northeast wind around 25 mph, with gusts as high as 40 mph.
Tuesday
Mostly cloudy, with a high near 58. Breezy, with a northeast wind 15 to 25 mph, with gusts as high as 35 mph.
Tuesday Night
A 30 percent chance of showers, mainly after 4am. Mostly cloudy, with a low around 47. Northeast wind around 15 mph, with gusts as high as 25 mph. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Showers likely, mainly after 10am. Cloudy, with a high near 56. East wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts between a half and three quarters of an inch possible.
Wednesday Night
Rain. Low around 46. East wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
New Year's Day
Rain. High near 53. Chance of precipitation is 90%.
Thursday Night
Showers likely, mainly before 10pm. Mostly cloudy, with a low around 47. Chance of precipitation is 60%.
Friday
Showers likely, mainly after 10am. Cloudy, with a high near 54.
Friday Night
Showers likely. Mostly cloudy, with a low around 46.
Saturday
Showers likely. Mostly cloudy, with a high near 53.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 42.
Sunday
A chance of showers. Partly sunny, with a high near 53.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 41.
Monday
A chance of showers. Partly sunny, with a high near 54.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
9 Miles NNW Altadena CA
 34.31°N 118.19°W (Elev. 4052 ft)
Last Update:
9:07 pm PST Dec 29, 2025
Forecast Valid:
12am PST Dec 30, 2025-6pm PST Jan 5, 2026
 
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