The temperatures in Lake Arrowhead in September are comfortable with low of 12°C and and high up to 22°C.
You can expect about 3 to 8 days of rain in Lake Arrowhead during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Lake Arrowhead in September 2025.
If you’re planning to visit Lake Arrowhead in the near future, we highly recommend that you review the 14 day weather forecast for Lake Arrowhead before you arrive.
Temperatures
22° / 12°
Rainy Days
6
Snowy Days
0
Dry Days
24
Rainfall
85
mm
Sun Hours
7.3
Hrs
