- Latitude: 34.095
- Longitude: -117.235
High Temperatures
On September 10 in this location the average high temperature is 91.9 °F (33.3 °C). The lowest recored high temperature was 71.1 °F (21.7 °C) in 1985 and the highest recored high temperature was 109.2 °F (42.9 °C) in 1948. The high temperature is usually* between 86.4 °F (30.2 °C) and 97.3 °F (36.3 °C). About a quarter of the time, the high temperature is less than 86.4 °F (30.2 °C), and another quarter of the time, the high temperature is greater than and 97.3 °F (36.3 °C). About 95% of the time, the high temperature has been between 76.1 °F (24.5 °C) and 107.6 °F (42.0 °C).
Low Temperatures
On September 10 in this location the average low temperature is 61.0 °F (16.1 °C). The lowest recored low temperature was 46.2 °F (7.9 °C) in 2010 and the lowest recored low temperature was 84.9 °F (29.4 °C) in 1979. The low temperature is usually* between 56.9 °F (13.9 °C) and 65.1 °F (18.4 °C). About a quarter of the time, the low temperature is less than 56.9 °F (13.9 °C), and another quarter of the time, the low temperature is greater than and 65.1 °F (18.4 °C). About 95% of the time, the low temperature has been between 49.1 °F (9.5 °C) and 72.9 °F (22.7 °C).
Frost
On September 10 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 2024
- NORTON AAF — Weather Bureau Army Navy (WBAN): 23122 — from year 2014 to 2024
- RIVERSIDE MUNICIPAL ARPT — Integrated Surface Dataset (ISD) station ID: 722869 — Weather Bureau Army Navy (WBAN): 03171 — from year 2006 to 2024
- SAN BERNARDINO INTL — Integrated Surface Dataset (ISD) station ID: 722866 — from year 2009 to 2024
- 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 2001 to 2004
- BEAUMONT — Integrated Surface Dataset (ISD) station ID: 722867 — from year 2000 to 2000
- BEAUMONT — Integrated Surface Dataset (ISD) station ID: 722867 — Weather Bureau Army Navy (WBAN): 23156 — from year 1973 to 1999
- BEAUMONT 1 E — Weather Bureau Army Navy (WBAN): 23156 — from year 1948 to 1952