August - Ontario International Airport - Weather History and Averages

A Weather Bureau Army Navy (WBAN) station ID was found for this station. Older data may be available at the WBAN page.

^{This site or product includes IATA/ICAO List data available from https://github.com/ip2location/ip2location-iata-icao.}

Historic station metadata

High Temperatures

On average, the day in August with the warmest high temperature in Ontario International Airport is August 29 at an average of 98.0 °F (36.7 °C).

On average, the day in August with the coldest high temperature in Ontario International Airport is August 21 at an average of 92.9 °F (33.8 °C).

The warmest recorded high temperature in August in Ontario International Airport was 111.0 °F (43.9 °C) on August 31 in the year 2017 at ONTARIO INTERNATIONAL ARPT — Integrated Surface Dataset (ISD) station ID: 747040 — Weather Bureau Army Navy (WBAN): 03102 .

The coldest recorded high temperature in August in Ontario International Airport was 77.0 °F (25.0 °C) on August 20 in the year 2002 at ONTARIO INTL ARPT — Integrated Surface Dataset (ISD) station ID: 747040 .

On average, the day in August with the warmest low temperature in Ontario International Airport is August 28 at an average of 66.7 °F (19.3 °C).

On average, the day in August with the coldest low temperature in Ontario International Airport is August 6 at an average of 64.0 °F (17.8 °C).

The warmest recorded low temperature in Ontario International Airport was 80.1 °F (26.7 °C) on August 17 in the year 2012 at ONTARIO INTERNATIONAL ARPT — Integrated Surface Dataset (ISD) station ID: 747040 — Weather Bureau Army Navy (WBAN): 03102 .

The coldest recorded low temperature in Ontario International Airport was 54.0 °F (12.2 °C) on August 11 in the year 2009 at ONTARIO INTERNATIONAL ARPT — Integrated Surface Dataset (ISD) station ID: 747040 — Weather Bureau Army Navy (WBAN): 03102 .

If you would like to see the temperatures for specific days, you can click on the corresponding links below: