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

93°F

34°C

Humidity 23%
Wind Speed WSW 8 MPH
Barometer NA
Dewpoint 50°F (10°C)
Visibility NA
Heat Index90°F (32°C)
Last update 22 Aug 06:54 PM PDT
Extended Forecast for

13 Miles NNW Mount Wilson CA

Extreme Heat Watch August 25, 10:00am until August 28, 08:00pm
Heat Advisory August 23, 10:00am until August 25, 10:00am
Click here for hazard details and duration
Extreme Heat Watch
Heat Advisory

  • Tonight

    Tonight: Clear, with a low around 67. Breezy, with a south wind 15 to 20 mph decreasing to 5 to 10 mph in the evening. Winds could gust as high as 25 mph.

    Low: 67 °F

    Clear and
    Breezy then
    Clear

  • Sunday

    Sunday: Sunny, with a high near 85. South southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 85 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 68. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 68 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 85. Breezy, with a southwest wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 85 °F

    Sunny then
    Sunny and
    Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 71. Southwest wind 5 to 15 mph becoming east after midnight. Winds could gust as high as 25 mph.

    Low: 71 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 75.

    Low: 75 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

Detailed Forecast

Tonight
Clear, with a low around 67. Breezy, with a south wind 15 to 20 mph decreasing to 5 to 10 mph in the evening. Winds could gust as high as 25 mph.
Sunday
Sunny, with a high near 85. South southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Sunday Night
Mostly clear, with a low around 68. South southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Monday
Sunny, with a high near 85. Breezy, with a southwest wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Monday Night
Mostly clear, with a low around 71. Southwest wind 5 to 15 mph becoming east after midnight. Winds could gust as high as 25 mph.
Tuesday
Sunny, with a high near 85.
Tuesday Night
Mostly clear, with a low around 75.
Wednesday
Sunny, with a high near 90.
Wednesday Night
Mostly clear, with a low around 74.
Thursday
Sunny, with a high near 90.
Thursday Night
Partly cloudy, with a low around 74.
Friday
Sunny, with a high near 89.
Friday Night
Mostly clear, with a low around 74.
Saturday
Sunny, with a high near 87.
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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:
7:41 pm PDT Aug 22, 2026
Forecast Valid:
7pm PDT Aug 22, 2026-6pm PDT Aug 29, 2026
 
Forecast Discussion
 
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Additional Resources

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