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

49°F

9°C

Humidity 63%
Wind Speed NNE 6 MPH
Barometer NA
Dewpoint 37°F (3°C)
Visibility NA
Wind Chill46°F (8°C)
Last update 09 Apr 05:54 AM PDT
Extended Forecast for

13 Miles NNW Mount Wilson CA

  • Today

    Today: Mostly sunny, with a high near 60. Breezy, with a northwest wind 5 to 10 mph becoming west southwest 15 to 25 mph in the afternoon. Winds could gust as high as 35 mph.

    High: 60 °F

    Mostly Sunny
    and Breezy

  • Tonight

    Tonight: Partly cloudy, with a low around 50. Breezy, with a south southwest wind 20 to 25 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 35 mph.

    Low: 50 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Clear

  • Friday

    Friday: Mostly sunny, with a high near 54. Windy, with a south southwest wind 10 to 20 mph increasing to 20 to 30 mph in the afternoon. Winds could gust as high as 40 mph.

    High: 54 °F

    Mostly Sunny
    and Windy

  • Friday Night

    Friday Night: A 40 percent chance of rain. Mostly cloudy, with a low around 45. 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. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 45 °F

    Chance Rain
    and Windy

  • Saturday

    Saturday: A 20 percent chance of rain. Mostly sunny, with a high near 48. 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.

    High: 48 °F

    Slight Chance
    Rain and
    Windy

  • Saturday Night

    Saturday Night: A chance of rain and thunderstorms before 11pm, then rain likely between 11pm and 2am, then rain likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 41. Breezy. Chance of precipitation is 70%.

    Low: 41 °F

    Rain Likely
    and Breezy

  • Sunday

    Sunday: Rain likely, mainly before 11am. Partly sunny, with a high near 45. Windy. Chance of precipitation is 60%.

    High: 45 °F

    Rain Likely
    and Windy

  • Sunday Night

    Sunday Night: A chance of rain before 8pm, then a chance of snow. Partly cloudy, with a low around 38. Breezy.

    Low: 38 °F

    Chance
    Rain/Snow and
    Breezy then
    Slight Chance
    Snow

  • Monday

    Monday: Mostly sunny, with a high near 47.

    High: 47 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 60. Breezy, with a northwest wind 5 to 10 mph becoming west southwest 15 to 25 mph in the afternoon. Winds could gust as high as 35 mph.
Tonight
Partly cloudy, with a low around 50. Breezy, with a south southwest wind 20 to 25 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 35 mph.
Friday
Mostly sunny, with a high near 54. Windy, with a south southwest wind 10 to 20 mph increasing to 20 to 30 mph in the afternoon. Winds could gust as high as 40 mph.
Friday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 45. 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. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
A 20 percent chance of rain. Mostly sunny, with a high near 48. 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.
Saturday Night
A chance of rain and thunderstorms before 11pm, then rain likely between 11pm and 2am, then rain likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 41. Breezy. Chance of precipitation is 70%.
Sunday
Rain likely, mainly before 11am. Partly sunny, with a high near 45. Windy. Chance of precipitation is 60%.
Sunday Night
A chance of rain before 8pm, then a chance of snow. Partly cloudy, with a low around 38. Breezy.
Monday
Mostly sunny, with a high near 47.
Monday Night
Clear, with a low around 39.
Tuesday
Sunny, with a high near 56.
Tuesday Night
Mostly clear, with a low around 45.
Wednesday
Mostly sunny, with a high near 59.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
13 Miles NNW Mount Wilson CA
 34.38°N 118.18°W (Elev. 5915 ft)
Last Update:
1:47 am PDT Apr 9, 2026
Forecast Valid:
6am PDT Apr 9, 2026-6pm PDT Apr 15, 2026
 
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