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

48°F

9°C

Humidity 61%
Wind Speed NNE 1 MPH
Barometer NA
Dewpoint 35°F (2°C)
Visibility NA
Last update 19 Apr 03:54 AM PDT
Extended Forecast for

12 Miles NNW Mount Wilson CA

  • Today

    Today: Sunny, with a high near 64. Breezy, with a south wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 64 °F

    Mostly Sunny
    then Sunny
    and Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 49. South wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 49 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 62. Breezy, with a south southwest wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 62 °F

    Sunny and
    Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 49. Breezy, with a south southwest wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 49 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Tuesday

    Tuesday: Rain likely after 11am. Mostly cloudy, with a high near 53. 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 45 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 53 °F

    Rain Likely
    and Breezy

  • Tuesday Night

    Tuesday Night: A 40 percent chance of rain before 11pm. Partly cloudy, with a low around 40. Breezy.

    Low: 40 °F

    Breezy.
    Chance Rain
    then Partly
    Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 53. Breezy.

    High: 53 °F

    Mostly Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 42. Breezy.

    Low: 42 °F

    Partly Cloudy
    and Breezy
    then Mostly
    Clear

  • Thursday

    Thursday: Sunny, with a high near 59.

    High: 59 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 64. Breezy, with a south wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 25 mph.
Tonight
Mostly clear, with a low around 49. South wind 10 to 15 mph, with gusts as high as 25 mph.
Monday
Sunny, with a high near 62. Breezy, with a south southwest wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Monday Night
Partly cloudy, with a low around 49. Breezy, with a south southwest wind 10 to 20 mph, with gusts as high as 30 mph.
Tuesday
Rain likely after 11am. Mostly cloudy, with a high near 53. 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 45 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
A 40 percent chance of rain before 11pm. Partly cloudy, with a low around 40. Breezy.
Wednesday
Mostly sunny, with a high near 53. Breezy.
Wednesday Night
Mostly clear, with a low around 42. Breezy.
Thursday
Sunny, with a high near 59.
Thursday Night
Partly cloudy, with a low around 46. Breezy.
Friday
Sunny, with a high near 60. Breezy.
Friday Night
Partly cloudy, with a low around 47.
Saturday
Mostly sunny, with a high near 55. Breezy.
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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:
12:41 am PDT Apr 19, 2026
Forecast Valid:
4am PDT Apr 19, 2026-6pm PDT Apr 25, 2026
 
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Additional Resources

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Chance of Precipitation