Current conditions at

ACTON (ATNC1)

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

NA

65°F

18°C

Humidity 43%
Wind Speed E 1 MPH
Barometer NA
Dewpoint 42°F (6°C)
Visibility NA
Last update 19 Aug 03:54 AM PDT
Detailed forecast for

Western San Gabriel Mountains and Highway 14 Corridor

Today
Sunny. Highs from 94 to 102 at low elevations to the mid 80s to lower 90s at high elevations. Southwest winds 15 to 25 mph in the afternoon.
Tonight
Mostly clear. Lows in the mid 60s to mid 70s. Southwest winds 15 to 25 mph in the evening.
Thursday
Sunny. Highs from 95 to 102 at low elevations to the mid 80s to lower 90s at high elevations. Southwest winds 15 to 25 mph in the afternoon.
Thursday Night
Mostly clear. Lows in the mid 60s to mid 70s. Southwest winds 15 to 25 mph in the evening.
Friday
Sunny in the morning then partly cloudy. Highs from 93 to 100 at low elevations to the mid 80s to around 90 at high elevations. Southwest winds 15 to 25 mph in the afternoon.
Friday Night
Mostly clear. Lows in the mid 60s to mid 70s.
Saturday
Sunny. Highs from 92 to 100 at low elevations to the 80s to around 90 at high elevations.
Saturday Night
Mostly clear. Lows in the mid 60s to mid 70s.
Sunday
Sunny. Highs from the lower to mid 90s at low elevations to the 80s at high elevations.
Sunday Night
Mostly clear. Lows in the mid 60s to lower 70s.
Monday
Sunny. Highs from the upper 80s to mid 90s at low elevations to the lower to mid 80s at high elevations.
Monday Night
Mostly clear. Lows in the mid 60s to lower 70s.
Tuesday
Sunny. Highs from the lower to mid 90s at low elevations to the 80s at high elevations.



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258 AM PDT Wed Aug 19 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database