August - Ontario International Airport - Weather History and Averages

An Integrated Surface Dataset (ISD) station ID was found for this station. Newer data may be available at the ISD 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 98.1 °F (36.7 °C).

On average, the day in August with the coldest high temperature in Ontario International Airport is August 20 at an average of 93.4 °F (34.1 °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 29 in the year 2010 at ONTARIO INTERNATIONAL ARPT — Integrated Surface Dataset (ISD) station ID: 747040 — Weather Bureau Army Navy (WBAN): 03102 .

On average, the day in August with the warmest low temperature in Ontario International Airport is August 29 at an average of 66.9 °F (19.4 °C).

On average, the day in August with the coldest low temperature in Ontario International Airport is August 20 at an average of 64.1 °F (17.9 °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 53.1 °F (11.7 °C) on August 22 in the year 1968 at ONTARIO INTERNATIONAL ARPT — 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: