- Latitude: 34.112
- Longitude: -117.688
High Temperatures
On November 18 in this location the average high temperature is 73.8 °F (23.2 °C). The lowest recored high temperature was 56.8 °F (13.8 °C) in 1994 and the highest recored high temperature was 93.0 °F (33.9 °C) in 2019. The high temperature is usually* between 68.6 °F (20.3 °C) and 79.0 °F (26.1 °C). About a quarter of the time, the high temperature is less than 68.6 °F (20.3 °C), and another quarter of the time, the high temperature is greater than and 79.0 °F (26.1 °C). About 95% of the time, the high temperature has been between 58.7 °F (14.8 °C) and 88.9 °F (31.6 °C).
Low Temperatures
On November 18 in this location the average low temperature is 47.5 °F (8.6 °C). The lowest recored low temperature was 30.2 °F (-1.0 °C) in 2009 and the lowest recored low temperature was 75.9 °F (24.4 °C) in 1949. The low temperature is usually* between 42.9 °F (6.0 °C) and 52.1 °F (11.2 °C). About a quarter of the time, the low temperature is less than 42.9 °F (6.0 °C), and another quarter of the time, the low temperature is greater than and 52.1 °F (11.2 °C). About 95% of the time, the low temperature has been between 34.1 °F (1.2 °C) and 60.9 °F (16.0 °C).
Frost
On November 18 in this location expect the temperatures to drop below freezing for a risk of frost about 1.2% 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
- EL MONTE AIRPORT — Integrated Surface Dataset (ISD) station ID: 747043 — Weather Bureau Army Navy (WBAN): 03165 — from year 2012 to 2024
- CABLE — Integrated Surface Dataset (ISD) station ID: 720329 — from year 2019 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