- Latitude: 33.952
- Longitude: -117.439
High Temperatures
On June 26 in this location the average high temperature is 90.3 °F (32.4 °C). The lowest recored high temperature was 69.1 °F (20.6 °C) in 1952 and the highest recored high temperature was 111.9 °F (44.4 °C) in 1990. The high temperature is usually* between 84.8 °F (29.3 °C) and 95.8 °F (35.4 °C). About a quarter of the time, the high temperature is less than 84.8 °F (29.3 °C), and another quarter of the time, the high temperature is greater than and 95.8 °F (35.4 °C). About 95% of the time, the high temperature has been between 74.3 °F (23.5 °C) and 106.2 °F (41.2 °C).
Low Temperatures
On June 26 in this location the average low temperature is 58.5 °F (14.7 °C). The lowest recored low temperature was 44.6 °F (7.0 °C) in 2012 and the lowest recored low temperature was 72.7 °F (22.6 °C) in 2006. The low temperature is usually* between 55.5 °F (13.1 °C) and 61.5 °F (16.4 °C). About a quarter of the time, the low temperature is less than 55.5 °F (13.1 °C), and another quarter of the time, the low temperature is greater than and 61.5 °F (16.4 °C). About 95% of the time, the low temperature has been between 49.8 °F (9.9 °C) and 67.3 °F (19.6 °C).
Frost
On June 26 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:
- MARCH AIR RESERVE BASE — Integrated Surface Dataset (ISD) station ID: 722860 — Weather Bureau Army Navy (WBAN): 23119 — from year 1933 to 2025
- 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
- SAN BERNARDINO INTL — Integrated Surface Dataset (ISD) station ID: 722866 — from year 2009 to 2025
- CORONA MUNICIPAL AIRPORT — Integrated Surface Dataset (ISD) station ID: 720333 — Weather Bureau Army Navy (WBAN): 53175 — from year 2011 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
- 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 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
- SAN BERNARDINO INTERNATIONAL — Integrated Surface Dataset (ISD) station ID: 722866 — Weather Bureau Army Navy (WBAN): 23122 — from year 1943 to 1993
- ONTARIO INTERNATIONAL ARPT — Weather Bureau Army Navy (WBAN): 03102 — from year 1968 to 1972