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

53°F

12°C

Humidity 85%
Wind Speed NNE 3 MPH
Barometer NA
Dewpoint 49°F (9°C)
Visibility NA
Last update 31 Mar 06:54 AM PDT
Extended Forecast for

13 Miles NNW Mount Wilson CA

  • Today

    Today: A 30 percent chance of rain after 11am. Mostly cloudy, with a high near 55. West southwest wind 10 to 15 mph, with gusts as high as 25 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 55 °F

    Chance Rain

  • Tonight

    Tonight: Rain likely, mainly before 11pm. Cloudy, then gradually becoming partly cloudy, with a low around 37. Wind chill values as low as 30. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 37 °F

    Rain Likely
    and Breezy
    then Chance
    Rain

  • Wednesday

    Wednesday: Sunny, with a high near 54. Wind chill values as low as 30 early. Breezy, with a southwest wind 10 to 15 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 35 mph.

    High: 54 °F

    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 42. Breezy, with a southwest wind 20 to 25 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 40 mph.

    Low: 42 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 54. Breezy, with a west southwest wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 35 mph.

    High: 54 °F

    Mostly Sunny
    then Sunny
    and Breezy

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 44. Breezy.

    Low: 44 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Friday

    Friday: Sunny, with a high near 59. Very windy.

    High: 59 °F

    Sunny and
    Very Windy

  • Friday Night

    Friday Night: Mostly clear, with a low around 51. Breezy.

    Low: 51 °F

    Mostly Clear
    and Breezy

  • Saturday

    Saturday: Sunny, with a high near 64. Windy.

    High: 64 °F

    Sunny and
    Windy

Detailed Forecast

Today
A 30 percent chance of rain after 11am. Mostly cloudy, with a high near 55. West southwest wind 10 to 15 mph, with gusts as high as 25 mph. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Rain likely, mainly before 11pm. Cloudy, then gradually becoming partly cloudy, with a low around 37. Wind chill values as low as 30. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Sunny, with a high near 54. Wind chill values as low as 30 early. Breezy, with a southwest wind 10 to 15 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 35 mph.
Wednesday Night
Partly cloudy, with a low around 42. Breezy, with a southwest wind 20 to 25 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 40 mph.
Thursday
Mostly sunny, with a high near 54. Breezy, with a west southwest wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 35 mph.
Thursday Night
Mostly clear, with a low around 44. Breezy.
Friday
Sunny, with a high near 59. Very windy.
Friday Night
Mostly clear, with a low around 51. Breezy.
Saturday
Sunny, with a high near 64. Windy.
Saturday Night
Mostly clear, with a low around 53. Breezy.
Sunday
Sunny, with a high near 67.
Sunday Night
Partly cloudy, with a low around 55.
Monday
Mostly sunny, with a high near 68.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
13 Miles NNW Mount Wilson CA
 34.38°N 118.18°W (Elev. 5915 ft)
Last Update:
12:41 am PDT Mar 31, 2026
Forecast Valid:
7am PDT Mar 31, 2026-6pm PDT Apr 6, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation