- Latitude: 34.095
- Longitude: -117.235
High Temperatures
On August 12 in this location the average high temperature is 94.6 °F (34.8 °C). The lowest recored high temperature was 75.0 °F (23.9 °C) in 1979 and the highest recored high temperature was 110.3 °F (43.5 °C) in 1933. The high temperature is usually* between 90.9 °F (32.7 °C) and 98.4 °F (36.9 °C). About a quarter of the time, the high temperature is less than 90.9 °F (32.7 °C), and another quarter of the time, the high temperature is greater than and 98.4 °F (36.9 °C). About 95% of the time, the high temperature has been between 83.9 °F (28.8 °C) and 105.4 °F (40.8 °C).
Low Temperatures
On August 12 in this location the average low temperature is 63.8 °F (17.7 °C). The lowest recored low temperature was 46.0 °F (7.8 °C) in 1949 and the lowest recored low temperature was 93.0 °F (33.9 °C) in 1980. The low temperature is usually* between 59.9 °F (15.5 °C) and 67.8 °F (19.9 °C). About a quarter of the time, the low temperature is less than 59.9 °F (15.5 °C), and another quarter of the time, the low temperature is greater than and 67.8 °F (19.9 °C). About 95% of the time, the low temperature has been between 52.4 °F (11.3 °C) and 75.3 °F (24.1 °C).
Frost
On August 12 in this location expect the temperatures to drop below freezing for a risk of frost about 0.0% of the time.
Data Source(s)
The data used to compute the average high/low temperatures for this location were taken from the following stations:
- MARCH AIR RESERVE BASE — Integrated Surface Dataset (ISD) station ID: 722860 — Weather Bureau Army Navy (WBAN): 23119 — from year 1933 to 2025
- NORTON AAF — Weather Bureau Army Navy (WBAN): 23122 — from year 2014 to 2025
- RIVERSIDE MUNICIPAL ARPT — Integrated Surface Dataset (ISD) station ID: 722869 — Weather Bureau Army Navy (WBAN): 03171 — from year 2006 to 2025
- SAN BERNARDINO INTL — Integrated Surface Dataset (ISD) station ID: 722866 — from year 2009 to 2025
- RIVERSIDE MUNI — Integrated Surface Dataset (ISD) station ID: 722869 — from year 1998 to 2005
- RIVERSIDE/MARCH AFB — Integrated Surface Dataset (ISD) station ID: 722860 — from year 2000 to 2004
- ONTARIO INTL ARPT — Integrated Surface Dataset (ISD) station ID: 747040 — from year 2002 to 2004
- BEAUMONT — Integrated Surface Dataset (ISD) station ID: 722867 — from year 2000 to 2001
- BEAUMONT — Integrated Surface Dataset (ISD) station ID: 722867 — Weather Bureau Army Navy (WBAN): 23156 — from year 1973 to 1999
- SAN BERNARDINO INTERNATIONAL — Integrated Surface Dataset (ISD) station ID: 722866 — Weather Bureau Army Navy (WBAN): 23122 — from year 1943 to 1993
- BEAUMONT 1 E — Weather Bureau Army Navy (WBAN): 23156 — from year 1948 to 1953