Rialto Weather in August

What's the weather like in Rialto (California) in August 2024?

The climate in Rialto during August can be summarized as hot and very dry.

August is in the summer in Rialto and is typically the warmest month of the year. Daytime maximum temperatures average around a warm 35°C (94°F), whilst at night 17°C (63°F) is normal.

Rialto weather averages (imperial / metric)
Daytime temperature 34.6°C 94.2°F
Nightly temperature 17.1°C 62.7°F
Average temperature 25.8°C 78.4°F
Daily sunshine 11.8 hrs
Avg rainfall 4 mm 0.2 ins
Rainy days 1 days
Sea temperature 19.7°C 67.5°F
Humidity 60%
Windspeed 13.3kph 8 mph

On average August is the 3rd driest month of the year in Rialto with around 4mm 0.2 inches of rain making it a very dry time to visit.

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

August temperatures in Rialto

Rialto average temperature in August

August rainfall

Rialto average rain in August

August hourly sunshine

Rialto 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 Rialto in August 2024.

Other monthly averages

Best places to visit in August

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Rialto weather stats

Rialto 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 Rialto (34.1064, -117.37032) Rialto map pin © Google

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