- Latitude: 34.067
- Longitude: -117.65
High Temperatures
On March 9 in this location the average high temperature is 71.0 °F (21.7 °C). The lowest recored high temperature was 55.4 °F (13.0 °C) in 2019 and the highest recored high temperature was 91.0 °F (32.8 °C) in 2004. The high temperature is usually* between 65.2 °F (18.4 °C) and 76.9 °F (24.9 °C). About a quarter of the time, the high temperature is less than 65.2 °F (18.4 °C), and another quarter of the time, the high temperature is greater than and 76.9 °F (24.9 °C). About 95% of the time, the high temperature has been between 54.0 °F (12.2 °C) and 88.0 °F (31.1 °C).
Low Temperatures
On March 9 in this location the average low temperature is 45.4 °F (7.5 °C). The lowest recored low temperature was 33.1 °F (0.6 °C) in 2022 and the lowest recored low temperature was 59.0 °F (15.0 °C) in 2007. The low temperature is usually* between 42.1 °F (5.6 °C) and 48.7 °F (9.3 °C). About a quarter of the time, the low temperature is less than 42.1 °F (5.6 °C), and another quarter of the time, the low temperature is greater than and 48.7 °F (9.3 °C). About 95% of the time, the low temperature has been between 35.8 °F (2.1 °C) and 55.1 °F (12.8 °C).
Frost
On March 9 in this location expect the temperatures to drop below freezing for a risk of frost about 0.3% 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