Hazardous Weather Conditions
Current conditions at
ACTON (ATNC1)
Lat: 34.44639°NLon: 118.1968°WElev: 2600.0ft.NA
51°F
11°C
| Humidity | 76% |
| Wind Speed | SW 7 MPH |
| Barometer | NA |
| Dewpoint | 44°F (7°C) |
| Visibility | NA |
| Last update | 12 Apr 04:54 AM PDT |
Extended Forecast for
9 Miles NNW Altadena CA
Winter Weather Advisory until April 13, 11:00am
NOW until 11:00am Mon

Winter Weather Advisory
Overnight

Low: 42 °F
Rain and
BreezySunday

High: 49 °F
Rain and
BreezySunday Night
Low: 36 °F
Chance Rain
and Breezy
then Partly
CloudyMonday

High: 52 °F
Mostly Sunny
and BreezyMonday Night

Low: 38 °F
Partly Cloudy
Tuesday

High: 60 °F
Sunny
Tuesday Night

Low: 41 °F
Clear
Wednesday

High: 62 °F
Sunny
Detailed Forecast
Overnight
Rain and possibly a thunderstorm. Low around 42. Breezy, with a south wind around 20 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Rain and possibly a thunderstorm. High near 49. Breezy, with a south southwest wind 20 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday Night
A 40 percent chance of rain before 11pm. Partly cloudy, with a low around 36. Wind chill values as low as 30. Breezy, with a southwest wind 15 to 20 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 30 mph. New precipitation amounts of less than a tenth of an inch possible.
Monday
Mostly sunny, with a high near 52. Breezy, with a west southwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Monday Night
Partly cloudy, with a low around 38. West southwest wind 10 to 15 mph becoming east northeast 5 to 10 mph after midnight. Winds could gust as high as 30 mph.
Tuesday
Sunny, with a high near 60.
Tuesday Night
Clear, with a low around 41.
Wednesday
Sunny, with a high near 62.
Wednesday Night
Partly cloudy, with a low around 45.
Thursday
Mostly sunny, with a high near 61.
Thursday Night
Mostly clear, with a low around 42.
Friday
Sunny, with a high near 63.
Friday Night
Clear, with a low around 45.
Saturday
Sunny, with a high near 68.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
9 Miles NNW Altadena CA
34.31°N 118.19°W (Elev. 4052 ft)
34.31°N 118.19°W (Elev. 4052 ft)
12:52 am PDT Apr 12, 2026
5am PDT Apr 12, 2026-6pm PDT Apr 18, 2026



