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

42°F

6°C

Humidity 98%
Wind Speed NNE 2 MPH
Barometer NA
Dewpoint 41°F (5°C)
Visibility NA
Last update 15 Feb 12:54 AM PST
Extended Forecast for

9 Miles NNW Altadena CA

High Wind Watch February 16, 06:00am until February 16, 06:00pm
Flood Watch February 16, 09:00am until February 16, 09:00pm
Click here for hazard details and duration
High Wind Watch
Flood Watch

  • Overnight

    Overnight: Mostly cloudy, with a low around 41. South wind around 10 mph, with gusts as high as 15 mph.

    Low: 41 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 51. South wind around 15 mph, with gusts as high as 20 mph.

    High: 51 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Rain likely after 4am. Mostly cloudy, with a low around 40. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 40 °F

    Breezy.
    Cloudy then
    Rain Likely

  • Washington's Birthday

    Washington's Birthday: Rain and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 45. Wind chill values as low as 30 early. Windy, with a southwest wind 30 to 35 mph, with gusts as high as 50 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

    High: 45 °F

    Heavy Rain
    and Windy

  • Monday Night

    Monday Night: Rain and possibly a thunderstorm. Low around 38. Windy, with a south southwest wind 30 to 35 mph, with gusts as high as 45 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 38 °F

    Rain and
    Windy

  • Tuesday

    Tuesday: Rain likely, mainly after 4pm. Mostly cloudy, with a high near 46. Windy. Chance of precipitation is 60%.

    High: 46 °F

    Rain Likely
    and Windy

  • Tuesday Night

    Tuesday Night: Rain. The rain could be heavy at times. Low around 38. Very windy. Chance of precipitation is 90%.

    Low: 38 °F

    Heavy Rain
    and Very
    Windy

  • Wednesday

    Wednesday: Rain, mainly before 10am. Partly sunny, with a high near 45. Breezy.

    High: 45 °F

    Rain and
    Breezy

  • Wednesday Night

    Wednesday Night: A chance of rain before 10pm, then a slight chance of snow. Partly cloudy, with a low around 33.

    Low: 33 °F

    Chance
    Rain/Snow
    then Slight
    Chance Snow

Detailed Forecast

Overnight
Mostly cloudy, with a low around 41. South wind around 10 mph, with gusts as high as 15 mph.
Sunday
Mostly cloudy, with a high near 51. South wind around 15 mph, with gusts as high as 20 mph.
Sunday Night
Rain likely after 4am. Mostly cloudy, with a low around 40. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Washington's Birthday
Rain and possibly a thunderstorm. Some of the storms could produce heavy rainfall. High near 45. Wind chill values as low as 30 early. Windy, with a southwest wind 30 to 35 mph, with gusts as high as 50 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Monday Night
Rain and possibly a thunderstorm. Low around 38. Windy, with a south southwest wind 30 to 35 mph, with gusts as high as 45 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Tuesday
Rain likely, mainly after 4pm. Mostly cloudy, with a high near 46. Windy. Chance of precipitation is 60%.
Tuesday Night
Rain. The rain could be heavy at times. Low around 38. Very windy. Chance of precipitation is 90%.
Wednesday
Rain, mainly before 10am. Partly sunny, with a high near 45. Breezy.
Wednesday Night
A chance of rain before 10pm, then a slight chance of snow. Partly cloudy, with a low around 33.
Thursday
A slight chance of snow before 10am, then a chance of rain. Partly sunny, with a high near 46.
Thursday Night
A chance of rain and snow. Partly cloudy, with a low around 33.
Friday
A slight chance of rain. Mostly sunny, with a high near 50.
Friday Night
A slight chance of rain and snow. Partly cloudy, with a low around 37.
Saturday
A slight chance of rain and snow. Mostly sunny, with a high near 54.
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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:
1:06 am PST Feb 15, 2026
Forecast Valid:
1am PST Feb 15, 2026-6pm PST Feb 21, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation