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

54°F

12°C

Humidity 34%
Wind Speed SSE 5 MPH
Barometer NA
Dewpoint 26°F (-3°C)
Visibility NA
Last update 15 Feb 04:54 PM PST
Extended Forecast for

12 Miles NNW Mount Wilson CA

Winter Storm Watch February 17, 09:00pm until February 19, 09:00am
Flood Watch February 16, 09:00am until February 16, 09:00pm
High Wind Warning February 16, 06:00am until February 16, 06:00pm
Click here for hazard details and duration
Winter Storm Watch
Flood Watch
High Wind Warning

  • Tonight

    Tonight: Rain likely, possibly mixed with snow after 4am. Cloudy, with a low around 35. Wind chill values as low as 25. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 35 °F

    Cloudy then
    Rain/Snow
    Likely

  • Washington's Birthday

    Washington's Birthday: Rain likely, possibly mixed with snow, becoming all rain after 7am. The rain could be heavy at times. Some thunder is also possible. Cloudy, with a high near 42. Wind chill values as low as 20. Windy, with a south wind around 30 mph, with gusts as high as 45 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 42 °F

    Windy.
    Rain/Snow
    Likely then
    Heavy Rain

  • Monday Night

    Monday Night: Rain and possibly a thunderstorm. Low around 31. Wind chill values as low as 20. Windy, with a south southwest wind around 30 mph, with gusts as high as 45 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 31 °F

    Rain and
    Windy

  • Tuesday

    Tuesday: Snow likely, mainly after 4pm. Partly sunny, with a high near 41. Wind chill values as low as 15. Windy, with a southwest wind 25 to 30 mph increasing to 30 to 35 mph in the afternoon. Winds could gust as high as 55 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 41 °F

    Snow Likely
    and Windy

  • Tuesday Night

    Tuesday Night: Rain and snow likely before 7pm, then rain. Low around 29. Very windy, with a southwest wind around 45 mph, with gusts as high as 70 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

    Low: 29 °F

    Very Windy.
    Rain/Snow
    then Rain

  • Wednesday

    Wednesday: Rain and snow likely, becoming all snow after 7am. Partly sunny, with a high near 42. Windy. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 42 °F

    Windy.
    Rain/Snow
    Likely then
    Slight Chance
    Snow

  • Wednesday Night

    Wednesday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 33. Breezy. New snow accumulation of less than a half inch possible.

    Low: 33 °F

    Chance Snow
    and Breezy

  • Thursday

    Thursday: A chance of snow. Partly sunny, with a high near 37. Breezy.

    High: 37 °F

    Chance Snow
    and Breezy

  • Thursday Night

    Thursday Night: A chance of snow, mainly before 10pm. Partly cloudy, with a low around 32. Breezy.

    Low: 32 °F

    Chance Snow
    and Breezy

Detailed Forecast

Tonight
Rain likely, possibly mixed with snow after 4am. Cloudy, with a low around 35. Wind chill values as low as 25. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Washington's Birthday
Rain likely, possibly mixed with snow, becoming all rain after 7am. The rain could be heavy at times. Some thunder is also possible. Cloudy, with a high near 42. Wind chill values as low as 20. Windy, with a south wind around 30 mph, with gusts as high as 45 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Monday Night
Rain and possibly a thunderstorm. Low around 31. Wind chill values as low as 20. Windy, with a south southwest wind around 30 mph, with gusts as high as 45 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Tuesday
Snow likely, mainly after 4pm. Partly sunny, with a high near 41. Wind chill values as low as 15. Windy, with a southwest wind 25 to 30 mph increasing to 30 to 35 mph in the afternoon. Winds could gust as high as 55 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Tuesday Night
Rain and snow likely before 7pm, then rain. Low around 29. Very windy, with a southwest wind around 45 mph, with gusts as high as 70 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Wednesday
Rain and snow likely, becoming all snow after 7am. Partly sunny, with a high near 42. Windy. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Wednesday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 33. Breezy. New snow accumulation of less than a half inch possible.
Thursday
A chance of snow. Partly sunny, with a high near 37. Breezy.
Thursday Night
A chance of snow, mainly before 10pm. Partly cloudy, with a low around 32. Breezy.
Friday
Sunny, with a high near 42.
Friday Night
Mostly clear, with a low around 35.
Saturday
Sunny, with a high near 46.
Saturday Night
Mostly clear, with a low around 39.
Sunday
Mostly sunny, with a high near 51.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
12 Miles NNW Mount Wilson CA
 34.39°N 118.12°W (Elev. 5531 ft)
Last Update:
1:07 pm PST Feb 15, 2026
Forecast Valid:
5pm PST Feb 15, 2026-6pm PST Feb 22, 2026
 
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