Current conditions at

ACTON (ATNC1)

Lat: 34.44639° N Lon: 118.1968° W Elev: 2600.0 ft.

NA

50°F

10°C

Humidity 73%
Wind Speed SSW 6 MPH
Barometer NA
Dewpoint 42°F (6°C)
Visibility NA
Wind Chill48°F (9°C)
Last update 12 Apr 02:54 AM PDT
Detailed forecast for

Western San Gabriel Mountains and Highway 14 Corridor

Today
Rain with a slight chance of thunderstorms in the morning, then rain likely with a slight chance of thunderstorms in the afternoon. Highs from the mid 50s to around 60 at low elevations to the mid 40s to lower 50s at high elevations. Southwest winds 20 to 30 mph with gusts to 50 mph.
Tonight
Mostly cloudy with a chance of rain and snow in the evening, becoming partly cloudy after midnight. Snow level 5000 to 5500 feet in the late evening and overnight. No snow accumulation. Lows in the mid 30s to mid 40s. Southwest winds 15 to 25 mph. Gusts to 40 mph in the evening.
Monday
Sunny in the morning, becoming partly cloudy with a slight chance of showers and a chance of snow showers in the afternoon. No snow accumulation. Highs from the mid 50s to lower 60s at low elevations to the mid 40s to lower 50s at high elevations. West winds 15 to 25 mph in the afternoon.
Monday Night
Partly cloudy in the evening then mostly clear. Lows in the mid 30s to mid 40s. West winds 15 to 25 mph in the evening.
Tuesday
Sunny. Highs from the mid 60s to around 70 at low elevations to the mid 50s to around 60 at high elevations. West winds around 15 mph in the afternoon.
Tuesday Night
Clear. Lows in the 40s.
Wednesday
Sunny. Highs from the mid 60s to lower 70s at low elevations to around 60 at high elevations.
Wednesday Night
Partly cloudy. Lows in the mid 40s to lower 50s.
Thursday
Partly cloudy. Highs from the mid 60s to around 70 at low elevations to the mid 50s to around 60 at high elevations.
Thursday Night
Mostly clear. Lows in the 40s.
Friday
Sunny. Highs from the mid 60s to lower 70s at low elevations to the upper 50s to mid 60s at high elevations.
Friday Night
Clear. Lows in the mid 40s to lower 50s.
Saturday
Sunny. Highs from the lower to mid 70s at low elevations to the 60s at high elevations.



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208 AM PDT Sun Apr 12 2026
 
 

Additional Resources

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Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database