Mount San Antonio Weather Forecast
- 43
- 51
Sunny
- 46
- 57
Sunny
- 45
- 56
Mostly Sunny
- 45
- 56
Sunny
- 42
- 54
Mostly Sunny
- 42
- 50
Mostly Sunny
Today 17 Oct Eastern San Gabriel Mountains
Sunny. Highs from the upper 60s and 70s at low Elevations to the 50s at high Elevations. Northeast Winds 15 to 25 Mph.
Tonight 17 Oct Eastern San Gabriel Mountains
Clear. Lows in the 50s to around 60 except the lower to mid 40s Colder Valleys and Slopes. Northeast Winds around 15 Mph.
Mount San Antonio Temperature Statistics
October Temperature
Brackett Field Airport (14.9 miles)
Lowest 12 October, 2025
53.6 °FAverage October
68.9 °FHighest 10 October, 2025
87.8 °F
Climate (2020–Present)
Brackett Field Airport (14.9 miles)
Average Low 2020–2025
55.5 °FAverage 2020–2025
67.6 °FAverage High 2020–2025
75.6 °F