Current conditions at

ACTON (ATNC1)

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

NA

54°F

12°C

Humidity 61%
Wind Speed WSW 9 MPH
Barometer NA
Dewpoint 41°F (5°C)
Visibility NA
Last update 20 Nov 10:54 AM PST
Extended Forecast for

13 Miles NNW Mount Wilson CA

Winter Weather Advisory November 20, 01:00pm until November 21, 04:00pm
Click here for hazard details and duration
Winter Weather Advisory
  • Today

    Today: Rain likely.  Cloudy, with a high near 40. South wind around 10 mph, with gusts as high as 15 mph.  Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    High: 40 °F

    Rain Likely

  • Tonight

    Tonight: Rain before 10pm, then rain and snow between 10pm and 1am, then snow after 1am.  Low around 35. Wind chill values as low as 25. South wind 10 to 15 mph becoming north northeast in the evening. Winds could gust as high as 20 mph.  Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    Low: 35 °F

    Rain/Snow

  • Friday

    Friday: Snow showers likely before 1pm, then a chance of rain and snow showers. Some thunder is also possible.  Mostly cloudy, with a high near 40. Wind chill values as low as 25. Breezy, with a northeast wind 20 to 25 mph, with gusts as high as 30 mph.  Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 40 °F

    Breezy. Snow
    Showers
    Likely then
    Chance
    Rain/Snow

  • Friday Night

    Friday Night: A 40 percent chance of showers.  Mostly cloudy, with a low around 40. Wind chill values as low as 30. Windy, with a northeast wind 25 to 30 mph, with gusts as high as 40 mph.  New precipitation amounts of less than a tenth of an inch possible.

    Low: 40 °F

    Chance
    Showers and
    Windy

  • Saturday

    Saturday: Sunny, with a high near 45. Breezy, with a northeast wind 15 to 20 mph decreasing to 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 45 °F

    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Clear, with a low around 43.

    Low: 43 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 50.

    High: 50 °F

    Sunny

  • Sunday Night

    Sunday Night: Clear, with a low around 44.

    Low: 44 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 52.

    High: 52 °F

    Sunny

Detailed Forecast

Today
Rain likely. Cloudy, with a high near 40. South wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Tonight
Rain before 10pm, then rain and snow between 10pm and 1am, then snow after 1am. Low around 35. Wind chill values as low as 25. South wind 10 to 15 mph becoming north northeast in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Friday
Snow showers likely before 1pm, then a chance of rain and snow showers. Some thunder is also possible. Mostly cloudy, with a high near 40. Wind chill values as low as 25. Breezy, with a northeast wind 20 to 25 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Friday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 40. Wind chill values as low as 30. Windy, with a northeast wind 25 to 30 mph, with gusts as high as 40 mph. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Sunny, with a high near 45. Breezy, with a northeast wind 15 to 20 mph decreasing to 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph.
Saturday Night
Clear, with a low around 43.
Sunday
Sunny, with a high near 50.
Sunday Night
Clear, with a low around 44.
Monday
Sunny, with a high near 52.
Monday Night
Mostly clear, with a low around 44.
Tuesday
Sunny, with a high near 50.
Tuesday Night
Mostly clear, with a low around 44.
Wednesday
Sunny, with a high near 51.
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ABOUT THIS FORECAST

 
Point Forecast:
13 Miles NNW Mount Wilson CA
 34.38°N 118.18°W (Elev. 5915 ft)
2:51 am PST Nov 20, 2025
11am PST Nov 20, 2025-6pm PST Nov 26, 2025
 
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Additional Resources

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