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

77°F

25°C

Humidity 16%
Wind Speed NE 7 MPH
Barometer NA
Dewpoint 27°F (-3°C)
Visibility NA
Heat Index77°F (25°C)
Last update 15 Mar 06:54 PM PDT
Extended Forecast for

13 Miles NNW Mount Wilson CA

Heat Advisory March 16, 10:00am until March 17, 10:00am
Extreme Heat Warning March 17, 10:00am until March 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
Extreme Heat Warning

  • Tonight

    Tonight: Clear, with a low around 63. East northeast wind 10 to 15 mph, with gusts as high as 20 mph.

    Low: 63 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 73. Northeast wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 73 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 67. Northeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 67 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 78. North northeast wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 78 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 70. North northwest wind 5 to 10 mph becoming east northeast after midnight. Winds could gust as high as 15 mph.

    Low: 70 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 71.

    Low: 71 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 72.

    Low: 72 °F

    Clear

Detailed Forecast

Tonight
Clear, with a low around 63. East northeast wind 10 to 15 mph, with gusts as high as 20 mph.
Monday
Sunny, with a high near 73. Northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Monday Night
Clear, with a low around 67. Northeast wind around 10 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 78. North northeast wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 70. North northwest wind 5 to 10 mph becoming east northeast after midnight. Winds could gust as high as 15 mph.
Wednesday
Sunny, with a high near 81.
Wednesday Night
Clear, with a low around 71.
Thursday
Sunny, with a high near 83.
Thursday Night
Clear, with a low around 72.
Friday
Sunny, with a high near 83.
Friday Night
Clear, with a low around 71. Breezy.
Saturday
Sunny, with a high near 80.
Saturday Night
Mostly clear, with a low around 66. Breezy.
Sunday
Sunny, with a high near 73. Breezy.
Basemap Options
Click map to change the forecast location
Loading map...
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:
2:21 pm PDT Mar 15, 2026
Forecast Valid:
7pm PDT Mar 15, 2026-6pm PDT Mar 22, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation