September - custom location - Weather History and Averages

High Temperatures

On average, the day in September with the warmest high temperature in custom location is September 5 at an average of 83.8 °F (28.8 °C).

On average, the day in September with the coldest high temperature in custom location is September 18 at an average of 79.2 °F (26.2 °C).

Records

The warmest recorded high temperature in September in custom location was 113.0 °F (45.0 °C) on September 6 in the year 2024 at FULLERTON MUNICIPAL ARPT — Integrated Surface Dataset (ISD) station ID: 722976 — Weather Bureau Army Navy (WBAN): 03166 .

The coldest recorded high temperature in September in custom location was 14.9 °F (-9.5 °C) on September 22 in the year 1995 at NEWPORT BEACH — Integrated Surface Dataset (ISD) station ID: 722973 .

Low Temperatures

On average, the day in September with the warmest low temperature in custom location is September 2 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 60.9 °F (16.1 °C).

Records

The warmest recorded low temperature in custom location was 91.0 °F (32.8 °C) on September 3 in the year 1998 at FOB DWYER — Integrated Surface Dataset (ISD) station ID: 690160 — Weather Bureau Army Navy (WBAN): 93114 .

The coldest recorded low temperature in custom location was 7.0 °F (-13.9 °C) on September 22 in the year 1995 at NEWPORT BEACH — Integrated Surface Dataset (ISD) station ID: 722973 .

Details

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