- Latitude: 34.067
- Longitude: -117.65
High Temperatures
On January 28 in this location the average high temperature is 67.9 °F (19.9 °C). The lowest recored high temperature was 53.6 °F (12.0 °C) in 2013 and the highest recored high temperature was 87.8 °F (31.0 °C) in 2003. The high temperature is usually* between 62.2 °F (16.8 °C) and 73.5 °F (23.1 °C). About a quarter of the time, the high temperature is less than 62.2 °F (16.8 °C), and another quarter of the time, the high temperature is greater than and 73.5 °F (23.1 °C). About 95% of the time, the high temperature has been between 51.5 °F (10.8 °C) and 84.3 °F (29.0 °C).
Low Temperatures
On January 28 in this location the average low temperature is 42.8 °F (6.0 °C). The lowest recored low temperature was 26.6 °F (-3.0 °C) in 2009 and the lowest recored low temperature was 66.9 °F (19.4 °C) in 2018. The low temperature is usually* between 38.6 °F (3.7 °C) and 46.9 °F (8.3 °C). About a quarter of the time, the low temperature is less than 38.6 °F (3.7 °C), and another quarter of the time, the low temperature is greater than and 46.9 °F (8.3 °C). About 95% of the time, the low temperature has been between 30.7 °F (-0.7 °C) and 54.9 °F (12.7 °C).
Frost
On January 28 in this location expect the temperatures to drop below freezing for a risk of frost about 4.0% 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:
- NORTON AAF — Weather Bureau Army Navy (WBAN): 23122 — from year 2015 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
- CHINO AIRPORT — Integrated Surface Dataset (ISD) station ID: 722899 — Weather Bureau Army Navy (WBAN): 03179 — from year 2006 to 2025
- CORONA MUNICIPAL AIRPORT — Integrated Surface Dataset (ISD) station ID: 720333 — Weather Bureau Army Navy (WBAN): 53175 — from year 2011 to 2025
- BRACKETT FIELD AIRPORT — Integrated Surface Dataset (ISD) station ID: 722887 — Weather Bureau Army Navy (WBAN): 03180 — from year 2013 to 2025
- CABLE — Integrated Surface Dataset (ISD) station ID: 720329 — from year 2018 to 2025
- CORONA MUNI — Integrated Surface Dataset (ISD) station ID: 720333 — from year 2007 to 2017
- RIVERSIDE MUNI — Integrated Surface Dataset (ISD) station ID: 722869 — from year 1999 to 2005
- CHINO — Integrated Surface Dataset (ISD) station ID: 722899 — from year 1999 to 2005
- ONTARIO INTL ARPT — Integrated Surface Dataset (ISD) station ID: 747040 — from year 2002 to 2004
- ONTARIO — Integrated Surface Dataset (ISD) station ID: 722865 — from year 2000 to 2001
- 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