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

41°F

5°C

Humidity 90%
Wind Speed SE 1 MPH
Barometer NA
Dewpoint 38°F (3°C)
Visibility NA
Last update 22 Apr 01:54 AM PDT
Extended Forecast for

13 Miles NNW Mount Wilson CA

  • Overnight

    Overnight: Partly cloudy, with a low around 39. West wind around 15 mph, with gusts as high as 20 mph.

    Low: 39 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 53. Breezy, with a west northwest wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 53 °F

    Sunny then
    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 41. Breezy, with a north wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: 41 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Thursday

    Thursday: Sunny, with a high near 59. North wind 10 to 15 mph becoming west in the afternoon. Winds could gust as high as 25 mph.

    High: 59 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 46. West wind 5 to 15 mph becoming south southwest after midnight. Winds could gust as high as 20 mph.

    Low: 46 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 58. Breezy.

    High: 58 °F

    Mostly Sunny
    and Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 45. Breezy.

    Low: 45 °F

    Partly Cloudy
    and Breezy
    then Mostly
    Cloudy

  • Saturday

    Saturday: A slight chance of rain after 11am. Partly sunny, with a high near 48. Windy.

    High: 48 °F

    Slight Chance
    Rain and
    Windy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 42. Windy.

    Low: 42 °F

    Partly Cloudy
    and Windy
    then Partly
    Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 39. West wind around 15 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 53. Breezy, with a west northwest wind 10 to 20 mph, with gusts as high as 30 mph.
Wednesday Night
Mostly clear, with a low around 41. Breezy, with a north wind 15 to 20 mph, with gusts as high as 30 mph.
Thursday
Sunny, with a high near 59. North wind 10 to 15 mph becoming west in the afternoon. Winds could gust as high as 25 mph.
Thursday Night
Mostly clear, with a low around 46. West wind 5 to 15 mph becoming south southwest after midnight. Winds could gust as high as 20 mph.
Friday
Mostly sunny, with a high near 58. Breezy.
Friday Night
Partly cloudy, with a low around 45. Breezy.
Saturday
A slight chance of rain after 11am. Partly sunny, with a high near 48. Windy.
Saturday Night
Partly cloudy, with a low around 42. Windy.
Sunday
Mostly sunny, with a high near 50. Breezy.
Sunday Night
Partly cloudy, with a low around 40. Breezy.
Monday
Mostly sunny, with a high near 53. Breezy.
Monday Night
Partly cloudy, with a low around 44. Breezy.
Tuesday
A slight chance of rain. Mostly sunny, with a high near 55.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
13 Miles NNW Mount Wilson CA
 34.38°N 118.18°W (Elev. 5915 ft)
Last Update:
2:16 am PDT Apr 22, 2026
Forecast Valid:
2am PDT Apr 22, 2026-6pm PDT Apr 28, 2026
 
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Additional Resources

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Chance of Precipitation