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

49°F

9°C

Humidity 56%
Wind Speed NNE 14 MPH
Barometer NA
Dewpoint 34°F (1°C)
Visibility NA
Wind Chill44°F (7°C)
Last update 28 Dec 10:54 AM PST
Extended Forecast for

9 Miles NNW Altadena CA

High Wind Watch December 28, 10:00pm until December 29, 03:00pm
Wind Advisory December 28, 06:00pm until December 28, 10:00pm
Click here for hazard details and duration
High Wind Watch
Wind Advisory

  • Today

    Today: Sunny, with a high near 54. Breezy, with a northeast wind around 20 mph, with gusts as high as 30 mph.

    High: 54 °F

    Sunny and
    Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 40. Wind chill values as low as 30. Windy, with a northeast wind 25 to 30 mph, with gusts as high as 40 mph.

    Low: 40 °F

    Mostly Clear
    and Windy

  • Monday

    Monday: Sunny, with a high near 57. Wind chill values as low as 30 early. Windy, with a north northeast wind around 30 mph, with gusts as high as 45 mph.

    High: 57 °F

    Sunny and
    Windy

  • Monday Night

    Monday Night: Mostly clear, with a low around 42. Breezy, with a northeast wind around 25 mph, with gusts as high as 40 mph.

    Low: 42 °F

    Mostly Clear
    and Breezy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 62. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 35 mph.

    High: 62 °F

    Mostly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of showers after 10am. Mostly sunny, with a high near 63.

    High: 63 °F

    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers. Mostly cloudy, with a low around 46.

    Low: 46 °F

    Chance
    Showers

  • New Year's Day

    New Year's Day: Showers likely. Mostly cloudy, with a high near 55.

    High: 55 °F

    Showers
    Likely

Detailed Forecast

Today
Sunny, with a high near 54. Breezy, with a northeast wind around 20 mph, with gusts as high as 30 mph.
Tonight
Mostly clear, with a low around 40. Wind chill values as low as 30. Windy, with a northeast wind 25 to 30 mph, with gusts as high as 40 mph.
Monday
Sunny, with a high near 57. Wind chill values as low as 30 early. Windy, with a north northeast wind around 30 mph, with gusts as high as 45 mph.
Monday Night
Mostly clear, with a low around 42. Breezy, with a northeast wind around 25 mph, with gusts as high as 40 mph.
Tuesday
Mostly sunny, with a high near 62. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 35 mph.
Tuesday Night
Partly cloudy, with a low around 44.
Wednesday
A 20 percent chance of showers after 10am. Mostly sunny, with a high near 63.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 46.
New Year's Day
Showers likely. Mostly cloudy, with a high near 55.
Thursday Night
Showers likely. Mostly cloudy, with a low around 46.
Friday
Showers likely. Mostly cloudy, with a high near 55.
Friday Night
Showers likely. Mostly cloudy, with a low around 46.
Saturday
A chance of showers. Partly sunny, with a high near 55.
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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:
4:17 am PST Dec 28, 2025
Forecast Valid:
11am PST Dec 28, 2025-6pm PST Jan 3, 2026
 
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