Current conditions at

ACTON (ATNC1)

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

NA

76°F

24°C

Humidity 27%
Wind Speed ENE 8 MPH
Barometer NA
Dewpoint 40°F (4°C)
Visibility NA
Heat Index77°F (25°C)
Last update 29 Sep 09:54 AM PDT
Detailed forecast for

Western San Gabriel Mountains and Highway 14 Corridor

Today
Sunny. Highs from the lower to mid 80s at low elevations to the 70s at high elevations. North winds 15 to 25 mph shifting to the northwest in the afternoon.
Tonight
Clear. Lows in the mid 50s to mid 60s. North winds around 15 mph.
Wednesday
Sunny. Highs from the mid 80s to around 90 at low elevations to the mid 70s to around 80 at high elevations.
Wednesday Night
Clear. Lows in the upper 50s to mid 60s. Southwest winds around 15 mph in the evening.
Thursday
Sunny. Highs from the upper 80s to mid 90s at low elevations to the upper 70s to mid 80s at high elevations.
Thursday Night
Clear. Lows in the 60s.
Friday
Sunny. Highs from the upper 80s to mid 90s at low elevations to the lower to mid 80s at high elevations.
Friday Night
Mostly clear. Lows in the 60s to around 70.
Saturday
Sunny. Highs from the upper 80s to mid 90s at low elevations to the lower to mid 80s at high elevations.
Saturday Night
Clear. Lows in the mid 60s to lower 70s.
Sunday
Sunny. Highs from the upper 80s to mid 90s at low elevations to the lower to mid 80s at high elevations.
Sunday Night
Clear. Lows in the 60s to around 70.
Monday
Sunny. Highs from the upper 80s to mid 90s at low elevations to the upper 70s to mid 80s at high elevations.



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604 AM PDT Tue Sep 29 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database