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

45°F

7°C

Humidity 64%
Wind Speed SE 1 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Last update 21 Apr 12:54 AM PDT
Extended Forecast for

13 Miles NNW Mount Wilson CA

Wind Advisory April 21, 10:00am until April 21, 10:00pm
Click here for hazard details and duration
Wind Advisory

  • Overnight

    Overnight: Partly cloudy, with a low around 44. Southwest wind around 15 mph, with gusts as high as 25 mph.

    Low: 44 °F

    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 west southwest wind 20 to 30 mph, with gusts 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. West northwest wind around 15 mph, with gusts as high as 25 mph.

    High: 53 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 41. Breezy, with a north northwest wind 10 to 20 mph, with gusts as high as 25 mph.

    Low: 41 °F

    Clear and
    Breezy then
    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 59. Breezy.

    High: 59 °F

    Sunny then
    Mostly Sunny
    and Breezy

  • Thursday Night

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

    Low: 46 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 44. Southwest wind around 15 mph, with gusts as high as 25 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 west southwest wind 20 to 30 mph, with gusts 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. West northwest wind around 15 mph, with gusts as high as 25 mph.
Wednesday Night
Mostly clear, with a low around 41. Breezy, with a north northwest wind 10 to 20 mph, with gusts as high as 25 mph.
Thursday
Sunny, with a high near 59. Breezy.
Thursday Night
Partly cloudy, with a low around 46.
Friday
Mostly sunny, with a high near 58.
Friday Night
Partly cloudy, with a low around 45.
Saturday
A slight chance of rain after 11am. Mostly sunny, with a high near 50. Breezy.
Saturday Night
A slight chance of rain. Partly cloudy, with a low around 43. Breezy.
Sunday
Mostly sunny, with a high near 51. Breezy.
Sunday Night
Partly cloudy, with a low around 44. Breezy.
Monday
Mostly sunny, with a high near 55.
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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:
11:26 pm PDT Apr 20, 2026
Forecast Valid:
1am PDT Apr 21, 2026-6pm PDT Apr 27, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation