- Latitude: 33.952
- Longitude: -117.439
High Temperatures
On average, the day in September with the warmest high temperature in custom location is September 5 at an average of 94.4 °F (34.7 °C).
On average, the day in September with the coldest high temperature in custom location is September 19 at an average of 87.8 °F (31.0 °C).
Records
The warmest recorded high temperature in September in custom location was 120.9 °F (49.4 °C) on September 6 in the year 2020 at CHINO AIRPORT — Integrated Surface Dataset (ISD) station ID: 722899 — Weather Bureau Army Navy (WBAN): 03179 .
The coldest recorded high temperature in September in custom location was 61.3 °F (16.3 °C) on September 23 in the year 1934 at MARCH AIR RESERVE BASE — Integrated Surface Dataset (ISD) station ID: 722860 — Weather Bureau Army Navy (WBAN): 23119 .
Low Temperatures
On average, the day in September with the warmest low temperature in custom location is September 4 at an average of 62.6 °F (17.0 °C).
On average, the day in September with the coldest low temperature in custom location is September 30 at an average of 57.4 °F (14.1 °C).
Records
The warmest recorded low temperature in custom location was 105.1 °F (40.6 °C) on September 1 in the year 1987 at ONTARIO — Integrated Surface Dataset (ISD) station ID: 722865 — Weather Bureau Army Navy (WBAN): 93180 .
The coldest recorded low temperature in custom location was 37.9 °F (3.3 °C) on September 30 in the year 2013 at CORONA MUNICIPAL AIRPORT — Integrated Surface Dataset (ISD) station ID: 720333 — Weather Bureau Army Navy (WBAN): 53175 .
Details
If you would like to see the temperatures for specific days, you can click on the corresponding links below: