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

81°F

27°C

Humidity 7%
Wind Speed SW 3 MPH
Barometer NA
Dewpoint 12°F (-11°C)
Visibility NA
Heat Index79°F (26°C)
Last update 18 Apr 04:54 PM PDT
Extended Forecast for

13 Miles NNW Mount Wilson CA

  • Tonight

    Tonight: Increasing clouds, with a low around 51. West southwest wind 5 to 10 mph becoming south southeast in the evening. Winds could gust as high as 15 mph.

    Low: 51 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly sunny, with a high near 62. Breezy, with a south southwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 62 °F

    Partly Sunny
    then Mostly
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Clear, with a low around 46. Breezy, with a south wind 10 to 20 mph, with gusts as high as 25 mph.

    Low: 46 °F

    Mostly Clear
    and Breezy
    then Clear

  • Monday

    Monday: Sunny, with a high near 61. 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: 61 °F

    Sunny and
    Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 45. Breezy, with a south southwest wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 45 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Tuesday

    Tuesday: A 30 percent chance of rain after 11am. Mostly sunny, with a high near 52. Breezy.

    High: 52 °F

    Chance Rain
    and Breezy

  • Tuesday Night

    Tuesday Night: Rain likely, mainly before 11pm. Mostly cloudy, with a low around 41. Breezy. Chance of precipitation is 60%.

    Low: 41 °F

    Breezy. Rain
    Likely then
    Slight Chance
    Rain

  • Wednesday

    Wednesday: Mostly sunny, with a high near 52. Breezy.

    High: 52 °F

    Mostly Sunny
    then Sunny
    and Breezy

  • Wednesday Night

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

    Low: 42 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

Detailed Forecast

Tonight
Increasing clouds, with a low around 51. West southwest wind 5 to 10 mph becoming south southeast in the evening. Winds could gust as high as 15 mph.
Sunday
Mostly sunny, with a high near 62. Breezy, with a south southwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Sunday Night
Clear, with a low around 46. Breezy, with a south wind 10 to 20 mph, with gusts as high as 25 mph.
Monday
Sunny, with a high near 61. 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
Mostly clear, with a low around 45. Breezy, with a south southwest wind 10 to 20 mph, with gusts as high as 30 mph.
Tuesday
A 30 percent chance of rain after 11am. Mostly sunny, with a high near 52. Breezy.
Tuesday Night
Rain likely, mainly before 11pm. Mostly cloudy, with a low around 41. Breezy. Chance of precipitation is 60%.
Wednesday
Mostly sunny, with a high near 52. Breezy.
Wednesday Night
Mostly clear, with a low around 42. Breezy.
Thursday
Sunny, with a high near 58.
Thursday Night
Mostly clear, with a low around 45.
Friday
Sunny, with a high near 56. Breezy.
Friday Night
Mostly clear, with a low around 44. Breezy.
Saturday
Sunny, with a high near 58.
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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:
11:26 am PDT Apr 18, 2026
Forecast Valid:
5pm PDT Apr 18, 2026-6pm PDT Apr 25, 2026
 
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