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

59°F

15°C

Humidity 39%
Wind Speed SSE 4 MPH
Barometer NA
Dewpoint 34°F (1°C)
Visibility NA
Last update 19 Apr 08:54 PM PDT
Extended Forecast for

13 Miles NNW Mount Wilson CA

  • Tonight

    Tonight: Mostly clear, with a low around 47. South wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 47 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 60. 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: 60 °F

    Sunny then
    Sunny and
    Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 44. Breezy, with a south southwest wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 44 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Tuesday

    Tuesday: Rain likely after 11am. Mostly cloudy, with a high near 51. Windy, with a south southwest wind 15 to 20 mph increasing to 25 to 30 mph in the afternoon. Winds could gust as high as 45 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 51 °F

    Rain Likely
    and Windy

  • Tuesday Night

    Tuesday Night: Rain likely before 11pm. Mostly cloudy, with a low around 39. Windy, with a southwest wind 20 to 30 mph decreasing to 10 to 20 mph after midnight. Winds could gust as high as 45 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 39 °F

    Rain Likely
    and Windy
    then Partly
    Cloudy and
    Breezy

  • Wednesday

    Wednesday: Sunny, with a high near 53. Breezy.

    High: 53 °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 Clear

  • Thursday

    Thursday: Sunny, with a high near 58.

    High: 58 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 46. Breezy.

    Low: 46 °F

    Partly Cloudy
    and Breezy
    then Partly
    Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 47. South wind 10 to 15 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 60. 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 44. 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 51. Windy, with a south southwest wind 15 to 20 mph increasing to 25 to 30 mph in the afternoon. Winds could gust as high as 45 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Tuesday Night
Rain likely before 11pm. Mostly cloudy, with a low around 39. Windy, with a southwest wind 20 to 30 mph decreasing to 10 to 20 mph after midnight. Winds could gust as high as 45 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Sunny, with a high near 53. Breezy.
Wednesday Night
Mostly clear, with a low around 42. Breezy.
Thursday
Sunny, with a high near 58.
Thursday Night
Partly cloudy, with a low around 46. Breezy.
Friday
Mostly sunny, with a high near 55. Breezy.
Friday Night
Partly cloudy, with a low around 44. Breezy.
Saturday
Mostly sunny, with a high near 51. Breezy.
Saturday Night
Partly cloudy, with a low around 44. Breezy.
Sunday
Mostly sunny, with a high near 51. Breezy.
Basemap Options
Click map to change the forecast location
Loading map...
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:
8:17 pm PDT Apr 19, 2026
Forecast Valid:
9pm PDT Apr 19, 2026-6pm PDT Apr 26, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation