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

55°F

13°C

Humidity 76%
Wind Speed WSW 7 MPH
Barometer NA
Dewpoint 48°F (9°C)
Visibility NA
Last update 10 Apr 10:54 PM PDT
Extended Forecast for

12 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

  • Tonight

    Tonight: Mostly cloudy, with a low around 44. Breezy, with a south wind 15 to 20 mph, with gusts as high as 25 mph.

    Low: 44 °F

    Mostly Cloudy
    and Breezy

  • Saturday

    Saturday: Mostly sunny, with a high near 51. Windy, with a south wind 15 to 20 mph increasing to 25 to 30 mph in the afternoon. Winds could gust as high as 40 mph.

    High: 51 °F

    Mostly Sunny
    and Windy

  • Saturday Night

    Saturday Night: A 40 percent chance of rain after 11pm. Mostly cloudy, with a low around 40. Windy, with a south wind 25 to 30 mph, with gusts as high as 40 mph. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 40 °F

    Chance Rain
    and Windy

  • Sunday

    Sunday: Rain before 11am, then rain likely and possibly a thunderstorm between 11am and 2pm, then rain likely after 2pm. High near 47. Wind chill values as low as 30. Windy, with a south southwest wind around 30 mph, with gusts as high as 45 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 47 °F

    Windy. Rain
    then Rain
    Likely

  • Sunday Night

    Sunday Night: A 20 percent chance of rain before 11pm. Partly cloudy, with a low around 39. Breezy, with a southwest wind 20 to 25 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 35 mph.

    Low: 39 °F

    Slight Chance
    Rain and
    Breezy then
    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 48. Breezy.

    High: 48 °F

    Sunny and
    Breezy

  • Monday Night

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

    Low: 40 °F

    Mostly Clear
    and Breezy
    then Clear

  • Tuesday

    Tuesday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 45.

    Low: 45 °F

    Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 44. Breezy, with a south wind 15 to 20 mph, with gusts as high as 25 mph.
Saturday
Mostly sunny, with a high near 51. Windy, with a south wind 15 to 20 mph increasing to 25 to 30 mph in the afternoon. Winds could gust as high as 40 mph.
Saturday Night
A 40 percent chance of rain after 11pm. Mostly cloudy, with a low around 40. Windy, with a south wind 25 to 30 mph, with gusts as high as 40 mph. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
Rain before 11am, then rain likely and possibly a thunderstorm between 11am and 2pm, then rain likely after 2pm. High near 47. Wind chill values as low as 30. Windy, with a south southwest wind around 30 mph, with gusts as high as 45 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday Night
A 20 percent chance of rain before 11pm. Partly cloudy, with a low around 39. Breezy, with a southwest wind 20 to 25 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 35 mph.
Monday
Sunny, with a high near 48. Breezy.
Monday Night
Mostly clear, with a low around 40. Breezy.
Tuesday
Sunny, with a high near 56.
Tuesday Night
Clear, with a low around 45.
Wednesday
Sunny, with a high near 59.
Wednesday Night
Partly cloudy, with a low around 48. Breezy.
Thursday
Mostly sunny, with a high near 58.
Thursday Night
Mostly clear, with a low around 47.
Friday
Sunny, with a high near 64.
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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:
11:27 pm PDT Apr 10, 2026
Forecast Valid:
11pm PDT Apr 10, 2026-6pm PDT Apr 17, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation