- Latitude: 34.056
- Longitude: -117.6
High Temperatures
On June 28 in this location the average high temperature is 90.9 °F (32.7 °C). The lowest recored high temperature was 71.1 °F (21.7 °C) in 1952 and the highest recored high temperature was 109.9 °F (43.3 °C) in 1976. The high temperature is usually* between 85.5 °F (29.7 °C) and 96.4 °F (35.8 °C). About a quarter of the time, the high temperature is less than 85.5 °F (29.7 °C), and another quarter of the time, the high temperature is greater than and 96.4 °F (35.8 °C). About 95% of the time, the high temperature has been between 75.2 °F (24.0 °C) and 106.7 °F (41.5 °C).
Low Temperatures
On June 28 in this location the average low temperature is 60.3 °F (15.7 °C). The lowest recored low temperature was 48.2 °F (9.0 °C) in 2012 and the lowest recored low temperature was 74.3 °F (23.5 °C) in 2016. The low temperature is usually* between 57.1 °F (14.0 °C) and 63.5 °F (17.5 °C). About a quarter of the time, the low temperature is less than 57.1 °F (14.0 °C), and another quarter of the time, the low temperature is greater than and 63.5 °F (17.5 °C). About 95% of the time, the low temperature has been between 51.1 °F (10.6 °C) and 69.6 °F (20.9 °C).
Frost
On June 28 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:
- 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 1998 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 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