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

ACTON (ATNC1)

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

NA

58°F

14°C

Humidity 28%
Wind Speed ESE 1 MPH
Barometer NA
Dewpoint 25°F (-4°C)
Visibility NA
Last update 29 Mar 08:54 PM PDT
Extended Forecast for

9 Miles NNW Altadena CA

  • Tonight

    Tonight: Clear, with a low around 51. East wind around 5 mph.

    Low: 51 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 70. East southeast wind 5 to 10 mph becoming south southwest 10 to 15 mph in the morning. Winds could gust as high as 25 mph.

    High: 70 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 50. South wind 5 to 15 mph, with gusts as high as 20 mph.

    Low: 50 °F

    Clear

  • Tuesday

    Tuesday: Patchy fog before 11am. Otherwise, increasing clouds, with a high near 64. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 64 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Tuesday Night

    Tuesday Night: A 30 percent chance of rain. Mostly cloudy, with a low around 46. West southwest wind 5 to 15 mph, with gusts as high as 25 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 46 °F

    Chance Rain

  • Wednesday

    Wednesday: Sunny, with a high near 64. Breezy.

    High: 64 °F

    Mostly Sunny
    then Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 45. Breezy.

    Low: 45 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 62. Breezy.

    High: 62 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 43. Breezy.

    Low: 43 °F

    Partly Cloudy
    and Breezy
    then Mostly
    Clear

Detailed Forecast

Tonight
Clear, with a low around 51. East wind around 5 mph.
Monday
Sunny, with a high near 70. East southeast wind 5 to 10 mph becoming south southwest 10 to 15 mph in the morning. Winds could gust as high as 25 mph.
Monday Night
Clear, with a low around 50. South wind 5 to 15 mph, with gusts as high as 20 mph.
Tuesday
Patchy fog before 11am. Otherwise, increasing clouds, with a high near 64. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 46. West southwest wind 5 to 15 mph, with gusts as high as 25 mph. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Sunny, with a high near 64. Breezy.
Wednesday Night
Partly cloudy, with a low around 45. Breezy.
Thursday
Mostly sunny, with a high near 62. Breezy.
Thursday Night
Mostly clear, with a low around 43. Breezy.
Friday
Sunny, with a high near 64. Breezy.
Friday Night
Mostly clear, with a low around 47. Breezy.
Saturday
Sunny, with a high near 69. Breezy.
Saturday Night
Clear, with a low around 50.
Sunday
Sunny, with a high near 74.
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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:
11:27 am PDT Mar 29, 2026
Forecast Valid:
9pm PDT Mar 29, 2026-6pm PDT Apr 5, 2026
 
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Additional Resources

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Chance of Precipitation