Hazardous Weather Conditions
Current conditions at
ACTON (ATNC1)
Lat: 34.44639°NLon: 118.1968°WElev: 2600.0ft.NA
54°F
12°C
| Humidity | 61% |
| Wind Speed | WSW 9 MPH |
| Barometer | NA |
| Dewpoint | 41°F (5°C) |
| Visibility | NA |
| Last update | 20 Nov 10:54 AM PST |
Extended Forecast for
13 Miles NNW Mount Wilson CA
Winter Weather Advisory November 20, 01:00pm until November 21, 04:00pm
Today

High: 40 °F
Rain Likely
Tonight

Low: 35 °F
Rain/Snow
Friday
High: 40 °F
Breezy. Snow
Showers
Likely then
Chance
Rain/SnowFriday Night

Low: 40 °F
Chance
Showers and
WindySaturday

High: 45 °F
Sunny and
BreezySaturday Night

Low: 43 °F
Clear
Sunday

High: 50 °F
Sunny
Sunday Night

Low: 44 °F
Clear
Monday

High: 52 °F
Sunny
Detailed Forecast
Today
Rain likely. Cloudy, with a high near 40. South wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Tonight
Rain before 10pm, then rain and snow between 10pm and 1am, then snow after 1am. Low around 35. Wind chill values as low as 25. South wind 10 to 15 mph becoming north northeast in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Friday
Snow showers likely before 1pm, then a chance of rain and snow showers. Some thunder is also possible. Mostly cloudy, with a high near 40. Wind chill values as low as 25. Breezy, with a northeast wind 20 to 25 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Friday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 40. Wind chill values as low as 30. Windy, with a northeast wind 25 to 30 mph, with gusts as high as 40 mph. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Sunny, with a high near 45. Breezy, with a northeast wind 15 to 20 mph decreasing to 10 to 15 mph in the afternoon. Winds could gust as high as 30 mph.
Saturday Night
Clear, with a low around 43.
Sunday
Sunny, with a high near 50.
Sunday Night
Clear, with a low around 44.
Monday
Sunny, with a high near 52.
Monday Night
Mostly clear, with a low around 44.
Tuesday
Sunny, with a high near 50.
Tuesday Night
Mostly clear, with a low around 44.
Wednesday
Sunny, with a high near 51.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
ABOUT THIS FORECAST
Point Forecast:
13 Miles NNW Mount Wilson CA
34.38°N 118.18°W (Elev. 5915 ft)
34.38°N 118.18°W (Elev. 5915 ft)
2:51 am PST Nov 20, 2025
11am PST Nov 20, 2025-6pm PST Nov 26, 2025



