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

60°F

16°C

Humidity 56%
Wind Speed WSW 8 MPH
Barometer NA
Dewpoint 44°F (7°C)
Visibility NA
Last update 24 Apr 07:54 PM PDT
Extended Forecast for

9 Miles NNW Altadena CA

  • Overnight

    Overnight: Mostly cloudy, with a low around 39. South southwest wind around 10 mph.

    Low: 39 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 30 percent chance of rain after 11am. Mostly cloudy, with a high near 53. Breezy, with a south wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 53 °F

    Chance Rain
    and Breezy

  • Saturday Night

    Saturday Night: Rain likely. Cloudy, then gradually becoming partly cloudy, with a low around 36. Wind chill values as low as 25. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 36 °F

    Rain Likely
    and Breezy

  • Sunday

    Sunday: A 20 percent chance of rain before 11am. Mostly sunny, with a high near 52. Wind chill values as low as 25 early. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 52 °F

    Slight Chance
    Rain then
    Mostly Sunny
    and Breezy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 38. Breezy, with a southwest wind 15 to 20 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 30 mph.

    Low: 38 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Cloudy

  • Monday

    Monday: Sunny, with a high near 56.

    High: 56 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 45.

    Low: 45 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 39. South southwest wind around 10 mph.
Saturday
A 30 percent chance of rain after 11am. Mostly cloudy, with a high near 53. Breezy, with a south wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Rain likely. Cloudy, then gradually becoming partly cloudy, with a low around 36. Wind chill values as low as 25. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
A 20 percent chance of rain before 11am. Mostly sunny, with a high near 52. Wind chill values as low as 25 early. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Mostly cloudy, with a low around 38. Breezy, with a southwest wind 15 to 20 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 30 mph.
Monday
Sunny, with a high near 56.
Monday Night
Mostly clear, with a low around 41.
Tuesday
Sunny, with a high near 65.
Tuesday Night
Mostly clear, with a low around 45.
Wednesday
Sunny, with a high near 66.
Wednesday Night
Partly cloudy, with a low around 46.
Thursday
A slight chance of rain. Sunny, with a high near 64.
Thursday Night
Mostly clear, with a low around 47.
Friday
Sunny, with a high near 71.
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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:
2:16 am PDT Apr 25, 2026
Forecast Valid:
2am PDT Apr 25, 2026-6pm PDT May 1, 2026
 
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