Current conditions at

ACTON (ATNC1)

Lat: 34.44639°NLon: 118.1968°WElev: 2600.0ft.

NA

50°F

10°C

Humidity 41%
Wind Speed NNE 13 MPH
Barometer NA
Dewpoint 27°F (-3°C)
Visibility NA
Wind Chill45°F (7°C)
Last update 31 Dec 07:54 AM PST
Extended Forecast for

9 Miles NNW Altadena CA

Flood Watch December 31, 10:00pm until January 1, 10:00pm
Click here for hazard details and duration
Flood Watch
  • Today

    Today: Rain.  High near 55. East wind around 15 mph, with gusts as high as 20 mph.  Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 55 °F

    Rain

  • Tonight

    Tonight: Rain, with thunderstorms also possible after 4am.  Low around 45. Southeast wind around 15 mph, with gusts as high as 20 mph.  Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

    Low: 45 °F

    Rain

  • New Year's Day

    New Year's Day: Rain and possibly a thunderstorm before 10am, then rain between 10am and 4pm, then a slight chance of showers after 4pm.  High near 53. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 25 mph.  Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.

    High: 53 °F

    Showers and
    Breezy

  • Thursday Night

    Thursday Night: A 20 percent chance of showers before 10pm.  Mostly cloudy, with a low around 43. South southeast wind around 10 mph.

    Low: 43 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 53. South wind around 10 mph.

    High: 53 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A 40 percent chance of rain after 10pm.  Mostly cloudy, with a low around 45.

    Low: 45 °F

    Chance Rain

  • Saturday

    Saturday: Rain likely.  Mostly cloudy, with a high near 52. Chance of precipitation is 70%.

    High: 52 °F

    Rain Likely

  • Saturday Night

    Saturday Night: Rain likely, mainly before 4am.  Mostly cloudy, with a low around 44.

    Low: 44 °F

    Rain Likely

  • Sunday

    Sunday: Rain likely, mainly between 10am and 4pm.  Mostly cloudy, with a high near 52.

    High: 52 °F

    Rain Likely

Detailed Forecast

Today
Rain. High near 55. East wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Tonight
Rain, with thunderstorms also possible after 4am. Low around 45. Southeast wind around 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
New Year's Day
Rain and possibly a thunderstorm before 10am, then rain between 10am and 4pm, then a slight chance of showers after 4pm. High near 53. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 inches possible.
Thursday Night
A 20 percent chance of showers before 10pm. Mostly cloudy, with a low around 43. South southeast wind around 10 mph.
Friday
Mostly cloudy, with a high near 53. South wind around 10 mph.
Friday Night
A 40 percent chance of rain after 10pm. Mostly cloudy, with a low around 45.
Saturday
Rain likely. Mostly cloudy, with a high near 52. Chance of precipitation is 70%.
Saturday Night
Rain likely, mainly before 4am. Mostly cloudy, with a low around 44.
Sunday
Rain likely, mainly between 10am and 4pm. Mostly cloudy, with a high near 52.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 43.
Monday
A chance of rain. Mostly cloudy, with a high near 51.
Monday Night
A chance of rain. Mostly cloudy, with a low around 42.
Tuesday
A chance of rain. Partly sunny, with a high near 52.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
9 Miles NNW Altadena CA
 34.31°N 118.19°W (Elev. 4052 ft)
7:01 am PST Dec 31, 2025
8am PST Dec 31, 2025-6pm PST Jan 6, 2026
 
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Additional Resources

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