- Latitude: 33.952
- Longitude: -117.439
High Temperatures
On December 25 in this location the average high temperature is 65.8 °F (18.8 °C). The lowest recored high temperature was 46.9 °F (8.3 °C) in 1987 and the highest recored high temperature was 86.0 °F (30.0 °C) in 2022. The high temperature is usually* between 60.6 °F (15.9 °C) and 71.1 °F (21.7 °C). About a quarter of the time, the high temperature is less than 60.6 °F (15.9 °C), and another quarter of the time, the high temperature is greater than and 71.1 °F (21.7 °C). About 95% of the time, the high temperature has been between 50.5 °F (10.3 °C) and 81.1 °F (27.3 °C).
Low Temperatures
On December 25 in this location the average low temperature is 40.2 °F (4.5 °C). The lowest recored low temperature was 23.0 °F (-5.0 °C) in 1998 and the lowest recored low temperature was 63.0 °F (17.2 °C) in 1972. The low temperature is usually* between 35.9 °F (2.2 °C) and 44.4 °F (6.9 °C). About a quarter of the time, the low temperature is less than 35.9 °F (2.2 °C), and another quarter of the time, the low temperature is greater than and 44.4 °F (6.9 °C). About 95% of the time, the low temperature has been between 27.9 °F (-2.3 °C) and 52.5 °F (11.4 °C).
Frost
On December 25 in this location expect the temperatures to drop below freezing for a risk of frost about 9.6% 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
- ONTARIO INTERNATIONAL ARPT — Integrated Surface Dataset (ISD) station ID: 747040 — Weather Bureau Army Navy (WBAN): 03102 — from year 2005 to 2024
- RIVERSIDE MUNICIPAL ARPT — Integrated Surface Dataset (ISD) station ID: 722869 — Weather Bureau Army Navy (WBAN): 03171 — from year 2006 to 2024
- CHINO AIRPORT — Integrated Surface Dataset (ISD) station ID: 722899 — Weather Bureau Army Navy (WBAN): 03179 — from year 2006 to 2024
- SAN BERNARDINO INTL — Integrated Surface Dataset (ISD) station ID: 722866 — from year 2009 to 2024
- CORONA MUNICIPAL AIRPORT — Integrated Surface Dataset (ISD) station ID: 720333 — Weather Bureau Army Navy (WBAN): 53175 — from year 2011 to 2024
- CABLE — Integrated Surface Dataset (ISD) station ID: 720329 — from year 2017 to 2024
- NORTON AAF — Weather Bureau Army Navy (WBAN): 23122 — from year 2014 to 2023
- CORONA MUNI — Integrated Surface Dataset (ISD) station ID: 720333 — from year 2006 to 2016
- RIVERSIDE MUNI — Integrated Surface Dataset (ISD) station ID: 722869 — from year 1998 to 2005
- CHINO — Integrated Surface Dataset (ISD) station ID: 722899 — 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
- 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 1942 to 1999
- SAN BERNARDINO INTERNATIONAL — Integrated Surface Dataset (ISD) station ID: 722866 — Weather Bureau Army Navy (WBAN): 23122 — from year 1943 to 1992
- ONTARIO INTERNATIONAL ARPT — Weather Bureau Army Navy (WBAN): 03102 — from year 1968 to 1972