Current conditions at

ACTON (ATNC1)

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

NA

60°F

16°C

Humidity 44%
Wind Speed NE 5 MPH
Barometer NA
Dewpoint 38°F (3°C)
Visibility NA
Last update 09 Jul 02:54 AM PDT
Detailed forecast for

Western San Gabriel Mountains and Highway 14 Corridor

Today
Sunny. Highs from 91 to 101 at low elevations to the lower to mid 80s at high elevations. Northwest winds around 15 mph shifting to the southwest in the afternoon.
Tonight
Clear. Lows in the 60s to lower 70s. Southwest winds 15 to 25 mph in the evening.
Friday
Sunny. Highs from 90 to 100 at low elevations to the upper 70s to mid 80s at high elevations. Southwest winds 15 to 25 mph in the afternoon.
Friday Night
Mostly clear. Lows in the 60s to around 70. Southwest winds 15 to 25 mph.
Saturday
Partly cloudy. Highs from the upper 80s and 90s at low elevations to the mid 70s to lower 80s at high elevations. Southwest winds 15 to 25 mph in the afternoon.
Saturday Night
Mostly cloudy. Lows in the mid 60s to mid 70s.
Sunday
Mostly cloudy. Highs from 92 to 100 at low elevations to the 80s to around 90 at high elevations.
Sunday Night
Mostly cloudy in the evening, becoming partly cloudy with a slight chance of showers after midnight. Lows in the 60s to lower 70s.
Monday
Partly cloudy. A slight chance of showers in the afternoon. 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 mid 70s.
Tuesday
Sunny. Highs from 93 to 100 at low elevations to the mid 80s to around 90 at high elevations.
Tuesday Night
Mostly clear. Lows in the upper 60s and 70s.
Wednesday
Sunny. Highs from 94 to 100 at low elevations to the mid 80s to lower 90s at high elevations.



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207 AM PDT Thu Jul 9 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database