Current conditions at

ACTON (ATNC1)

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

NA

91°F

33°C

Humidity 25%
Wind Speed WNW 9 MPH
Barometer NA
Dewpoint 50°F (10°C)
Visibility NA
Heat Index88°F (31°C)
Last update 21 Jul 12:54 PM PDT
Detailed forecast for

Western San Gabriel Mountains and Highway 14 Corridor

Tonight
Clear. Lows in the 60s. Southwest winds around 15 mph. Gusts to 30 mph in the evening.
Wednesday
Sunny. Highs from 92 to 100 at low elevations to the mid 80s to around 90 at high elevations. West winds around 15 mph in the afternoon.
Wednesday Night
Clear. Lows in the mid 60s to mid 70s. West winds 10 to 20 with gusts to 30 mph shifting to the north after midnight.
Thursday
Sunny. Highs from 97 to 104 at low elevations to the upper 80s to mid 90s at high elevations. Southwest winds around 15 mph in the afternoon.
Thursday Night
Clear. Lows in the upper 60s and 70s. Southwest winds 10 to 20 with gusts to 30 mph shifting to the northwest after midnight.
Friday
Sunny. Highs from 98 to 105 at low elevations to the upper 80s to mid 90s at high elevations.
Friday Night
Clear. Lows in the mid 60s to mid 70s.
Saturday
Sunny. Highs from 94 to 100 at low elevations to the mid 80s to lower 90s at high elevations.
Saturday Night
Clear. Lows in the mid 60s to mid 70s.
Sunday
Sunny. Highs from 94 to 100 at low elevations to the mid 80s to lower 90s at high elevations.
Sunday Night
Clear. Lows in the mid 60s to mid 70s.
Monday
Sunny. Highs from the 90s at low elevations to the mid 80s to around 90 at high elevations.
Monday Night
Mostly clear. Lows in the mid 60s to lower 70s.
Tuesday
Sunny. Highs from the upper 80s to mid 90s at low elevations to the lower to mid 80s at high elevations.



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103 PM PDT Tue Jul 21 2026
 
 

Additional Resources

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Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database