- Latitude: 34.1
- Longitude: -117.783
High Temperatures
On average, the day in September with the warmest high temperature in custom location is September 5 at an average of 92.3 °F (33.5 °C).
On average, the day in September with the coldest high temperature in custom location is September 19 at an average of 85.2 °F (29.6 °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 44.6 °F (7.0 °C) on September 22 in the year 2007 at MOUNT WILSON — Integrated Surface Dataset (ISD) station ID: 722890 — Weather Bureau Army Navy (WBAN): 93136 .
Low Temperatures
On average, the day in September with the warmest low temperature in custom location is September 4 at an average of 64.6 °F (18.1 °C).
On average, the day in September with the coldest low temperature in custom location is September 30 at an average of 59.2 °F (15.1 °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 35.1 °F (1.7 °C) on September 19 in the year 1989 at MOUNT WILSON — Integrated Surface Dataset (ISD) station ID: 722890 — Weather Bureau Army Navy (WBAN): 93136 .
Details
If you would like to see the temperatures for specific days, you can click on the corresponding links below: