Hesperia Weather in September

What's the weather like in Hesperia (California) in September 2025?

The climate in Hesperia during September can be summarized as warm and very dry.

September is in the fall / autumn in Hesperia and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a comfortable 31°C (88°F), whilst at night 13°C (56°F) is normal.

Hesperia weather averages (imperial / metric)
Daytime temperature 31.2°C 88.1°F
Nightly temperature 13.3°C 55.9°F
Average temperature 22.2°C 72°F
Daily sunshine 10.5 hrs
Avg rainfall 8 mm 0.3 ins
Rainy days 2 days
Sea temperature 19.6°C 67.3°F
Humidity 55%
Windspeed 13.3kph 8 mph

On average September is the 3rd driest month of the year in Hesperia with around 8mm 0.3 inches of rain making it a very dry time to visit.

On the flip side this corresponds to an average of 10.5 hours of sunshine per day.

September temperatures in Hesperia

Hesperia average temperature in September

September rainfall

Hesperia average rain in September

September hourly sunshine

Hesperia average rain in September

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 Hesperia in September 2025.

Other monthly averages

Best places to visit in September

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Hesperia weather stats

Hesperia weather statistics
Hottest month: July 35.4°C 95.7°F
Driest month: June 2mm 0.1ins
Sunniest month: August 11.9hrs
Coldest month: December 13.9°C 57°F
Wettest month: January 52mm 2ins
Map showing location of Hesperia (34.42639, -117.30088) Hesperia map pin © Google

Locations nearby

Top United States locations