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

63°F

17°C

Humidity 51%
Wind Speed SSW 9 MPH
Barometer NA
Dewpoint 44°F (7°C)
Visibility NA
Last update 09 Apr 08:54 PM PDT
Extended Forecast for

12 Miles NNW Mount Wilson CA

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 48. South southwest wind around 15 mph, with gusts as high as 25 mph.

    Low: 48 °F

    Decreasing
    Clouds

  • Friday

    Friday: Mostly sunny, with a high near 56. 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 40 mph.

    High: 56 °F

    Mostly Sunny
    and Breezy

  • Friday Night

    Friday Night: A 30 percent chance of showers, mainly after 11pm. Mostly cloudy, with a low around 43. Windy, with a south wind 25 to 30 mph decreasing to 15 to 20 mph after midnight. Winds could gust as high as 40 mph. New precipitation amounts of less than a tenth of an inch possible.

    Low: 43 °F

    Chance
    Showers and
    Windy

  • Saturday

    Saturday: Mostly sunny, with a high near 49. Wind chill values as low as 30. Breezy, with a south wind 15 to 25 mph, with gusts as high as 35 mph.

    High: 49 °F

    Mostly Sunny
    and Breezy

  • Saturday Night

    Saturday Night: Rain likely, mainly after 11pm. Mostly cloudy, with a low around 41. Windy, with a southwest wind 25 to 30 mph, with gusts as high as 40 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 41 °F

    Rain Likely
    and Windy

  • Sunday

    Sunday: Showers, with thunderstorms also possible after 11am. High near 47. Breezy. Chance of precipitation is 80%.

    High: 47 °F

    Breezy.
    Showers then
    Chance
    Showers

  • Sunday Night

    Sunday Night: A 30 percent chance of rain, mainly before 11pm. Partly cloudy, with a low around 39. Breezy.

    Low: 39 °F

    Chance Rain
    and Breezy

  • Monday

    Monday: A chance of rain after 11am. Mostly sunny, with a high near 49. Breezy.

    High: 49 °F

    Chance Rain
    and Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 40. Breezy.

    Low: 40 °F

    Partly Cloudy
    and Breezy
    then Mostly
    Clear

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 48. South southwest wind around 15 mph, with gusts as high as 25 mph.
Friday
Mostly sunny, with a high near 56. 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 40 mph.
Friday Night
A 30 percent chance of showers, mainly after 11pm. Mostly cloudy, with a low around 43. Windy, with a south wind 25 to 30 mph decreasing to 15 to 20 mph after midnight. Winds could gust as high as 40 mph. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Mostly sunny, with a high near 49. Wind chill values as low as 30. Breezy, with a south wind 15 to 25 mph, with gusts as high as 35 mph.
Saturday Night
Rain likely, mainly after 11pm. Mostly cloudy, with a low around 41. Windy, with a southwest wind 25 to 30 mph, with gusts as high as 40 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Sunday
Showers, with thunderstorms also possible after 11am. High near 47. Breezy. Chance of precipitation is 80%.
Sunday Night
A 30 percent chance of rain, mainly before 11pm. Partly cloudy, with a low around 39. Breezy.
Monday
A chance of rain after 11am. Mostly sunny, with a high near 49. Breezy.
Monday Night
Mostly clear, with a low around 40. Breezy.
Tuesday
Sunny, with a high near 56.
Tuesday Night
Mostly clear, with a low around 44.
Wednesday
Sunny, with a high near 60.
Wednesday Night
Partly cloudy, with a low around 48.
Thursday
Mostly sunny, with a high near 60.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
12 Miles NNW Mount Wilson CA
 34.39°N 118.12°W (Elev. 5531 ft)
Last Update:
9:08 pm PDT Apr 9, 2026
Forecast Valid:
9pm PDT Apr 9, 2026-6pm PDT Apr 16, 2026
 
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Additional Resources

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Chance of Precipitation