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

65°F

18°C

Humidity 53%
Wind Speed WSW 11 MPH
Barometer NA
Dewpoint 47°F (8°C)
Visibility NA
Last update 10 Apr 09:54 AM PDT
Extended Forecast for

10 Miles NNW Altadena CA

  • Today

    Today: Mostly sunny, with a high near 52. Breezy, with a south southwest wind 10 to 15 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 35 mph.

    High: 52 °F

    Mostly Sunny
    and Breezy

  • Tonight

    Tonight: A 30 percent chance of rain, mainly after 11pm. Mostly cloudy, with a low around 46. Breezy, with a south southwest wind 20 to 25 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 35 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 46 °F

    Chance Rain
    and Breezy

  • Saturday

    Saturday: Mostly sunny, with a high near 50. Breezy, with a south wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 50 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Rain likely after 11pm. Increasing clouds, with a low around 43. Breezy, with a south southwest wind 20 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 43 °F

    Rain Likely
    and Breezy

  • Sunday

    Sunday: Rain and possibly a thunderstorm before 11am, then a chance of rain and thunderstorms between 11am and 2pm, then a chance of rain after 2pm. High near 47. Breezy, with a south southwest wind 20 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 47 °F

    Breezy. Rain
    then Chance
    Rain

  • Sunday Night

    Sunday Night: A 40 percent chance of rain. Mostly cloudy, with a low around 41. Breezy.

    Low: 41 °F

    Chance Rain
    and Breezy

  • Monday

    Monday: A 20 percent chance of rain after 11am. Mostly sunny, with a high near 48.

    High: 48 °F

    Slight Chance
    Rain

  • Monday Night

    Monday Night: Mostly clear, with a low around 43.

    Low: 43 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 54.

    High: 54 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 52. Breezy, with a south southwest wind 10 to 15 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 35 mph.
Tonight
A 30 percent chance of rain, mainly after 11pm. Mostly cloudy, with a low around 46. Breezy, with a south southwest wind 20 to 25 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 35 mph. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Mostly sunny, with a high near 50. Breezy, with a south wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Saturday Night
Rain likely after 11pm. Increasing clouds, with a low around 43. Breezy, with a south southwest wind 20 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Sunday
Rain and possibly a thunderstorm before 11am, then a chance of rain and thunderstorms between 11am and 2pm, then a chance of rain after 2pm. High near 47. Breezy, with a south southwest wind 20 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 41. Breezy.
Monday
A 20 percent chance of rain after 11am. Mostly sunny, with a high near 48.
Monday Night
Mostly clear, with a low around 43.
Tuesday
Sunny, with a high near 54.
Tuesday Night
Clear, with a low around 46.
Wednesday
Sunny, with a high near 59.
Wednesday Night
Partly cloudy, with a low around 49.
Thursday
Mostly sunny, with a high near 59.
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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:
2:14 am PDT Apr 10, 2026
Forecast Valid:
10am PDT Apr 10, 2026-6pm PDT Apr 16, 2026
 
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Additional Resources

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