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

66°F

19°C

Humidity 47%
Wind Speed SSW 8 MPH
Barometer NA
Dewpoint 45°F (7°C)
Visibility NA
Last update 09 Apr 06:54 PM PDT
Extended Forecast for

13 Miles NNW Mount Wilson CA

  • Tonight

    Tonight: Partly 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.

    Low: 46 °F

    Mostly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 54. Windy, with a south southwest wind 10 to 20 mph increasing to 20 to 30 mph in the afternoon. Winds could gust as high as 40 mph.

    High: 54 °F

    Mostly Sunny
    and Windy

  • Friday Night

    Friday Night: A 40 percent chance of showers, mainly after 11pm. Mostly cloudy, with a low around 41. Windy, with a south southwest wind 25 to 30 mph decreasing to 15 to 20 mph after midnight. Winds could gust as high as 45 mph. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 41 °F

    Chance
    Showers and
    Windy

  • Saturday

    Saturday: Mostly sunny, with a high near 48. Wind chill values as low as 30. Breezy, with a south southwest wind 15 to 20 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 45 mph.

    High: 48 °F

    Mostly Sunny
    and Breezy

  • Saturday Night

    Saturday Night: Rain likely, mainly after 11pm. Mostly cloudy, with a low around 39. Windy, with a south southwest wind 25 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 39 °F

    Rain Likely
    and Windy

  • Sunday

    Sunday: Rain showers before 8am, then rain and snow showers between 8am and 5pm, then a chance of rain showers after 5pm. Some thunder is also possible. High near 45. Windy. Chance of precipitation is 80%. Little or no snow accumulation expected.

    High: 45 °F

    Rain/Snow and
    Breezy then
    Chance
    Rain/Snow and
    Windy

  • Sunday Night

    Sunday Night: A chance of rain before 8pm, then a chance of rain and snow between 8pm and 2am, then a slight chance of rain after 2am. Partly cloudy, with a low around 39. Breezy. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 39 °F

    Chance
    Rain/Snow and
    Breezy

  • Monday

    Monday: A chance of rain after 11am. Mostly sunny, with a high near 47.

    High: 47 °F

    Chance Rain

  • Monday Night

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

    Low: 40 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly 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.
Friday
Mostly sunny, with a high near 54. Windy, with a south southwest wind 10 to 20 mph increasing to 20 to 30 mph in the afternoon. Winds could gust as high as 40 mph.
Friday Night
A 40 percent chance of showers, mainly after 11pm. Mostly cloudy, with a low around 41. Windy, with a south southwest wind 25 to 30 mph decreasing to 15 to 20 mph after midnight. Winds could gust as high as 45 mph. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Mostly sunny, with a high near 48. Wind chill values as low as 30. Breezy, with a south southwest wind 15 to 20 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 45 mph.
Saturday Night
Rain likely, mainly after 11pm. Mostly cloudy, with a low around 39. Windy, with a south southwest wind 25 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Sunday
Rain showers before 8am, then rain and snow showers between 8am and 5pm, then a chance of rain showers after 5pm. Some thunder is also possible. High near 45. Windy. Chance of precipitation is 80%. Little or no snow accumulation expected.
Sunday Night
A chance of rain before 8pm, then a chance of rain and snow between 8pm and 2am, then a slight chance of rain after 2am. Partly cloudy, with a low around 39. Breezy. Chance of precipitation is 30%. Little or no snow accumulation expected.
Monday
A chance of rain after 11am. Mostly sunny, with a high near 47.
Monday Night
Mostly clear, with a low around 40.
Tuesday
Sunny, with a high near 54.
Tuesday Night
Mostly clear, with a low around 44.
Wednesday
Sunny, with a high near 59.
Wednesday Night
Partly cloudy, with a low around 47.
Thursday
Mostly sunny, with a high near 59.
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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:
5:17 pm PDT Apr 9, 2026
Forecast Valid:
7pm PDT Apr 9, 2026-6pm PDT Apr 16, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation