Fontana Weather in October

What's the weather like in Fontana (California) in October 2025?

The climate in Fontana during October can be summarized as warm and dry.

October is in the fall / autumn in Fontana and is typically the 5th warmest month of the year. Daytime maximum temperatures average around a comfortable 28°C (82°F), whilst at night 11°C (52°F) is normal.

Fontana weather averages (imperial / metric)
Daytime temperature 27.6°C 81.6°F
Nightly temperature 11.3°C 52.3°F
Average temperature 19.4°C 66.9°F
Daily sunshine 9.2 hrs
Avg rainfall 10 mm 0.4 ins
Rainy days 2 days
Sea temperature 18.6°C 65.6°F
Humidity 60%
Windspeed 11.9kph 7 mph

On average October is the 6th driest month of the year in Fontana with around 10mm 0.4 inches of rain making it a dry time to visit. This rainfall is typically spread over 2 days, although this may vary considerably.

On the flip side this corresponds to an average of 9.2 hours of sunshine per day.

October temperatures in Fontana

Fontana average temperature in October

October rainfall

Fontana average rain in October

October hourly sunshine

Fontana average rain in October

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 Fontana in October 2025.

Other monthly averages

Best places to visit in October

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Fontana weather stats

Fontana weather statistics
Hottest month: August 34.1°C 93.4°F
Driest month: July 1mm 0ins
Sunniest month: August 11.8hrs
Coldest month: January 18.5°C 65.3°F
Wettest month: January 78mm 3.1ins
Map showing location of Fontana (34.09223, -117.43505) Fontana map pin © Google

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