- Latitude: 34.095
- Longitude: -117.235
High Temperatures
On December 31 in this location the average high temperature is 63.4 °F (17.4 °C). The lowest recored high temperature was 42.8 °F (6.0 °C) in 2014 and the highest recored high temperature was 84.2 °F (29.0 °C) in 2011. The high temperature is usually* between 58.0 °F (14.4 °C) and 68.8 °F (20.4 °C). About a quarter of the time, the high temperature is less than 58.0 °F (14.4 °C), and another quarter of the time, the high temperature is greater than and 68.8 °F (20.4 °C). About 95% of the time, the high temperature has been between 47.7 °F (8.7 °C) and 79.0 °F (26.1 °C).
Low Temperatures
On December 31 in this location the average low temperature is 39.3 °F (4.1 °C). The lowest recored low temperature was 22.1 °F (-5.5 °C) in 1969 and the lowest recored low temperature was 57.9 °F (14.4 °C) in 1980. The low temperature is usually* between 35.1 °F (1.7 °C) and 43.6 °F (6.4 °C). About a quarter of the time, the low temperature is less than 35.1 °F (1.7 °C), and another quarter of the time, the low temperature is greater than and 43.6 °F (6.4 °C). About 95% of the time, the low temperature has been between 27.0 °F (-2.8 °C) and 51.7 °F (10.9 °C).
Frost
On December 31 in this location expect the temperatures to drop below freezing for a risk of frost about 12.3% 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
- 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
- NORTON AAF — Weather Bureau Army Navy (WBAN): 23122 — from year 2014 to 2023
- 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
- SAN BERNARDINO INTERNATIONAL — Integrated Surface Dataset (ISD) station ID: 722866 — Weather Bureau Army Navy (WBAN): 23122 — from year 1943 to 1992
- BEAUMONT 1 E — Weather Bureau Army Navy (WBAN): 23156 — from year 1948 to 1952