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

101°F

38°C

Humidity 14%
Wind Speed SW 9 MPH
Barometer NA
Dewpoint 44°F (7°C)
Visibility NA
Heat Index97°F (36°C)
Last update 26 Jul 03:54 PM PDT
Extended Forecast for

9 Miles NNW Altadena CA

Heat Advisory July 26, 04:21pm until July 27, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory July 26, 04:21pm until July 27, 08:00pm

    NOW until 8:00pm Mon

    Heat Advisory

  • This Afternoon

    High: 91 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 64. South southwest wind around 5 mph becoming north after midnight.

    Low: 64 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 89. Light southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 15 mph.

    High: 89 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 64. West southwest wind 5 to 10 mph becoming northwest in the evening.

    Low: 64 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 87. Northwest wind 5 to 15 mph becoming southwest in the morning. Winds could gust as high as 20 mph.

    High: 87 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 62.

    Low: 62 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 62.

    Low: 62 °F

    Clear

Detailed Forecast

This Afternoon
Mostly cloudy early, then becoming sunny, with a high near 91. South southwest wind around 10 mph, with gusts as high as 15 mph.
Tonight
Mostly clear, with a low around 64. South southwest wind around 5 mph becoming north after midnight.
Monday
Sunny, with a high near 89. Light southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 15 mph.
Monday Night
Mostly clear, with a low around 64. West southwest wind 5 to 10 mph becoming northwest in the evening.
Tuesday
Sunny, with a high near 87. Northwest wind 5 to 15 mph becoming southwest in the morning. Winds could gust as high as 20 mph.
Tuesday Night
Clear, with a low around 62.
Wednesday
Sunny, with a high near 85.
Wednesday Night
Clear, with a low around 62.
Thursday
Sunny, with a high near 87.
Thursday Night
Clear, with a low around 65.
Friday
Sunny, with a high near 92.
Friday Night
Mostly clear, with a low around 69.
Saturday
Sunny, with a high near 95.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
9 Miles NNW Altadena CA
 34.31°N 118.19°W (Elev. 4052 ft)
Last Update:
1:23 pm PDT Jul 26, 2026
Forecast Valid:
4pm PDT Jul 26, 2026-6pm PDT Aug 1, 2026
 
Forecast Discussion
 
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Additional Resources

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