- Latitude: 34.1
- Longitude: -117.25
High Temperatures
On August 8 in this location the average high temperature is 94.9 °F (34.9 °C). The lowest recored high temperature was 80.6 °F (27.0 °C) in 1999 and the highest recored high temperature was 107.2 °F (41.8 °C) in 1970. The high temperature is usually* between 91.3 °F (32.9 °C) and 98.4 °F (36.9 °C). About a quarter of the time, the high temperature is less than 91.3 °F (32.9 °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 84.5 °F (29.1 °C) and 105.3 °F (40.7 °C).
Low Temperatures
On August 8 in this location the average low temperature is 63.7 °F (17.6 °C). The lowest recored low temperature was 51.1 °F (10.6 °C) in 1948 and the lowest recored low temperature was 86.9 °F (30.5 °C) in 1994. The low temperature is usually* between 60.3 °F (15.7 °C) and 67.1 °F (19.5 °C). About a quarter of the time, the low temperature is less than 60.3 °F (15.7 °C), and another quarter of the time, the low temperature is greater than and 67.1 °F (19.5 °C). About 95% of the time, the low temperature has been between 53.8 °F (12.1 °C) and 73.6 °F (23.1 °C).
Frost
On August 8 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
- ONTARIO INTERNATIONAL ARPT — Integrated Surface Dataset (ISD) station ID: 747040 — Weather Bureau Army Navy (WBAN): 03102 — from year 2005 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
- SAN BERNARDINO INTERNATIONAL — Integrated Surface Dataset (ISD) station ID: 722866 — Weather Bureau Army Navy (WBAN): 23122 — from year 1943 to 2013
- 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
- ONTARIO — Integrated Surface Dataset (ISD) station ID: 722865 — from year 2000 to 2000
- ONTARIO — Integrated Surface Dataset (ISD) station ID: 722865 — Weather Bureau Army Navy (WBAN): 93180 — from year 1943 to 1999
- BEAUMONT — Integrated Surface Dataset (ISD) station ID: 722867 — Weather Bureau Army Navy (WBAN): 23156 — from year 1973 to 1999
- ONTARIO INTERNATIONAL ARPT — Weather Bureau Army Navy (WBAN): 03102 — from year 1968 to 1972
- BEAUMONT 1 E — Weather Bureau Army Navy (WBAN): 23156 — from year 1948 to 1953