Lake Arrowhead Weather in August

What's the weather like in Lake Arrowhead (California) in August 2025?

The climate in Lake Arrowhead during August can be summarized as hot and dry.

August is in the summer in Lake Arrowhead and is typically the 2nd warmest month of the year. Daytime maximum temperatures average around 33°C (92°F), whilst at night 16°C (60°F) is normal.

Lake Arrowhead weather averages (imperial / metric)
Daytime temperature 33.2°C 91.7°F
Nightly temperature 15.5°C 59.8°F
Average temperature 24.3°C 75.7°F
Daily sunshine 11.8 hrs
Avg rainfall 13 mm 0.5 ins
Rainy days 1 days
Sea temperature 19.7°C 67.5°F
Humidity 57%
Windspeed 14kph 9 mph

On average August is the 4th driest month of the year in Lake Arrowhead with around 13mm 0.5 inches of rain making it a dry time to visit. This rainfall is typically spread over 1 days, although this may vary considerably.

On the flip side this corresponds to an average of 11.8 hours of sunshine per day.

August temperatures in Lake Arrowhead

Lake Arrowhead average temperature in August

August rainfall

Lake Arrowhead average rain in August

August hourly sunshine

Lake Arrowhead average rain in August

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Lake Arrowhead in August 2025.

Other monthly averages

Best places to visit in August

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Lake Arrowhead weather stats

Lake Arrowhead weather statistics
Hottest month: July 33.1°C 91.6°F
Driest month: June 4mm 0.2ins
Sunniest month: August 11.8hrs
Coldest month: December 12.8°C 55°F
Wettest month: January 74mm 2.9ins
Map showing location of Lake Arrowhead (34.24834, -117.18921) Lake Arrowhead map pin © Google

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