- Latitude: 34.056
- Longitude: -117.6
High Temperatures
On December 10 in this location the average high temperature is 69.4 °F (20.8 °C). The lowest recored high temperature was 48.0 °F (8.9 °C) in 1972 and the highest recored high temperature was 93.0 °F (33.9 °C) in 1950. The high temperature is usually* between 64.1 °F (17.8 °C) and 74.6 °F (23.7 °C). About a quarter of the time, the high temperature is less than 64.1 °F (17.8 °C), and another quarter of the time, the high temperature is greater than and 74.6 °F (23.7 °C). About 95% of the time, the high temperature has been between 54.1 °F (12.3 °C) and 84.6 °F (29.2 °C).
Low Temperatures
On December 10 in this location the average low temperature is 43.3 °F (6.3 °C). The lowest recored low temperature was 26.6 °F (-3.0 °C) in 2011 and the lowest recored low temperature was 64.9 °F (18.3 °C) in 1950. The low temperature is usually* between 39.1 °F (3.9 °C) and 47.5 °F (8.6 °C). About a quarter of the time, the low temperature is less than 39.1 °F (3.9 °C), and another quarter of the time, the low temperature is greater than and 47.5 °F (8.6 °C). About 95% of the time, the low temperature has been between 31.1 °F (-0.5 °C) and 55.4 °F (13.0 °C).
Frost
On December 10 in this location expect the temperatures to drop below freezing for a risk of frost about 3.5% 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:
- 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
- CORONA MUNICIPAL AIRPORT — Integrated Surface Dataset (ISD) station ID: 720333 — Weather Bureau Army Navy (WBAN): 53175 — from year 2011 to 2024
- BRACKETT FIELD AIRPORT — Integrated Surface Dataset (ISD) station ID: 722887 — Weather Bureau Army Navy (WBAN): 03180 — from year 2012 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
- 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 1943 to 1999
- ONTARIO INTERNATIONAL ARPT — Weather Bureau Army Navy (WBAN): 03102 — from year 1968 to 1972