- Latitude: 33.952
- Longitude: -117.439
High Temperatures
On average, the day in May with the warmest high temperature in custom location is May 31 at an average of 81.4 °F (27.4 °C).
On average, the day in May with the coldest high temperature in custom location is May 1 at an average of 77.7 °F (25.4 °C).
Records
The warmest recorded high temperature in May in custom location was 109.9 °F (43.3 °C) on May 29 in the year 1984 at SAN BERNARDINO INTERNATIONAL — Integrated Surface Dataset (ISD) station ID: 722866 — Weather Bureau Army Navy (WBAN): 23122 .
The coldest recorded high temperature in May in custom location was 53.4 °F (11.9 °C) on May 6 in the year 1964 at SAN BERNARDINO INTERNATIONAL — Integrated Surface Dataset (ISD) station ID: 722866 — Weather Bureau Army Navy (WBAN): 23122 .
Low Temperatures
On average, the day in May with the warmest low temperature in custom location is May 30 at an average of 54.6 °F (12.5 °C).
On average, the day in May with the coldest low temperature in custom location is May 1 at an average of 50.4 °F (10.2 °C).
Records
The warmest recorded low temperature in custom location was 82.0 °F (27.8 °C) on May 14 in the year 2014 at ONTARIO INTERNATIONAL ARPT — Integrated Surface Dataset (ISD) station ID: 747040 — Weather Bureau Army Navy (WBAN): 03102 .
The coldest recorded low temperature in custom location was 33.1 °F (0.6 °C) on May 1 in the year 1967 at MARCH AIR RESERVE BASE — Integrated Surface Dataset (ISD) station ID: 722860 — Weather Bureau Army Navy (WBAN): 23119 .
Details
If you would like to see the temperatures for specific days, you can click on the corresponding links below: