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

60°F

16°C

Humidity 30%
Wind Speed NNE 14 MPH
Barometer NA
Dewpoint 28°F (-2°C)
Visibility NA
Last update 20 Jan 10:54 AM PST
Extended Forecast for

9 Miles NNW Altadena CA

  • Today

    Today: Mostly sunny, with a high near 67. East northeast wind 10 to 15 mph becoming west in the afternoon.

    High: 67 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 45. East northeast wind around 10 mph.

    Low: 45 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 63. Northeast wind around 5 mph becoming south southwest in the afternoon.

    High: 63 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A 10 percent chance of rain after 4am. Mostly cloudy, with a low around 44. Calm wind becoming east southeast around 5 mph.

    Low: 44 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Thursday

    Thursday: A 40 percent chance of rain, mainly after 10am. Partly sunny, with a high near 57. East southeast wind around 5 mph becoming south southwest in the afternoon. New precipitation amounts of less than a tenth of an inch possible.

    High: 57 °F

    Chance Rain

  • Thursday Night

    Thursday Night: A 30 percent chance of rain, mainly before 10pm. Mostly cloudy, with a low around 44.

    Low: 44 °F

    Chance Rain

  • Friday

    Friday: A 30 percent chance of rain, mainly after 10am. Partly sunny, with a high near 54.

    High: 54 °F

    Chance Rain

  • Friday Night

    Friday Night: Partly cloudy, with a low around 41.

    Low: 41 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 57.

    High: 57 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 67. East northeast wind 10 to 15 mph becoming west in the afternoon.
Tonight
Partly cloudy, with a low around 45. East northeast wind around 10 mph.
Wednesday
Mostly cloudy, with a high near 63. Northeast wind around 5 mph becoming south southwest in the afternoon.
Wednesday Night
A 10 percent chance of rain after 4am. Mostly cloudy, with a low around 44. Calm wind becoming east southeast around 5 mph.
Thursday
A 40 percent chance of rain, mainly after 10am. Partly sunny, with a high near 57. East southeast wind around 5 mph becoming south southwest in the afternoon. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A 30 percent chance of rain, mainly before 10pm. Mostly cloudy, with a low around 44.
Friday
A 30 percent chance of rain, mainly after 10am. Partly sunny, with a high near 54.
Friday Night
Partly cloudy, with a low around 41.
Saturday
Mostly sunny, with a high near 57.
Saturday Night
Mostly clear, with a low around 39.
Sunday
Sunny, with a high near 60.
Sunday Night
Partly cloudy, with a low around 40.
Monday
Mostly sunny, with a high near 58.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
9 Miles NNW Altadena CA
 34.31°N 118.19°W (Elev. 4052 ft)
Last Update:
11:16 am PST Jan 20, 2026
Forecast Valid:
11am PST Jan 20, 2026-6pm PST Jan 26, 2026
 
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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