National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

ACTON (ATNC1)

Lat: 34.44639°NLon: 118.1968°WElev: 2600.0ft.

NA

69°F

21°C

Humidity 44%
Wind Speed SSW 11 MPH
Barometer NA
Dewpoint 46°F (8°C)
Visibility NA
Last update 10 Apr 03:54 PM PDT
Extended Forecast for

13 Miles NNW Mount Wilson CA

Winter Weather Advisory April 12, 03:00am until April 13, 11:00am
Click here for hazard details and duration
Winter Weather Advisory

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 52. Windy, with a south southwest wind around 30 mph, with gusts as high as 45 mph.

    High: 52 °F

    Partly Sunny
    and Windy

  • Tonight

    Tonight: A 20 percent chance of rain. Mostly cloudy, with a low around 42. 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.

    Low: 42 °F

    Slight Chance
    Rain and
    Windy

  • Saturday

    Saturday: Mostly sunny, with a high near 49. Breezy, with a south wind 15 to 25 mph, with gusts as high as 35 mph.

    High: 49 °F

    Mostly Sunny
    and Breezy

  • Saturday Night

    Saturday Night: A 50 percent chance of rain after 11pm. Increasing clouds, with a low around 39. Wind chill values as low as 25. Windy, with a southwest wind 25 to 30 mph, with gusts as high as 45 mph. New precipitation amounts between a quarter and half of an inch possible.

    Low: 39 °F

    Chance Rain
    and Windy

  • Sunday

    Sunday: Rain, with thunderstorms also possible after 11am. High near 45. Windy, with a south southwest wind 25 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 45 °F

    Windy. Rain
    then Chance
    Rain

  • Sunday Night

    Sunday Night: A 20 percent chance of rain before 11pm. Partly cloudy, with a low around 35. Breezy.

    Low: 35 °F

    Slight Chance
    Rain and
    Breezy then
    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 48. Breezy.

    High: 48 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Monday Night

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

    Low: 40 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 55.

    High: 55 °F

    Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 52. Windy, with a south southwest wind around 30 mph, with gusts as high as 45 mph.
Tonight
A 20 percent chance of rain. Mostly cloudy, with a low around 42. 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.
Saturday
Mostly sunny, with a high near 49. Breezy, with a south wind 15 to 25 mph, with gusts as high as 35 mph.
Saturday Night
A 50 percent chance of rain after 11pm. Increasing clouds, with a low around 39. Wind chill values as low as 25. Windy, with a southwest wind 25 to 30 mph, with gusts as high as 45 mph. New precipitation amounts between a quarter and half of an inch possible.
Sunday
Rain, with thunderstorms also possible after 11am. High near 45. Windy, with a south southwest wind 25 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
A 20 percent chance of rain before 11pm. Partly cloudy, with a low around 35. Breezy.
Monday
Mostly sunny, with a high near 48. Breezy.
Monday Night
Mostly clear, with a low around 40.
Tuesday
Sunny, with a high near 55.
Tuesday Night
Clear, with a low around 44.
Wednesday
Sunny, with a high near 59.
Wednesday Night
Mostly clear, with a low around 47.
Thursday
Mostly sunny, with a high near 56.
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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:
12:12 pm PDT Apr 10, 2026
Forecast Valid:
4pm PDT Apr 10, 2026-6pm PDT Apr 16, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation