- Latitude: 34.112
- Longitude: -117.688
High Temperatures
On April 3 in this location the average high temperature is 73.6 °F (23.1 °C). The lowest recored high temperature was 60.1 °F (15.6 °C) in 1999 and the highest recored high temperature was 89.1 °F (31.7 °C) in 2016. The high temperature is usually* between 68.4 °F (20.2 °C) and 78.9 °F (26.0 °C). About a quarter of the time, the high temperature is less than 68.4 °F (20.2 °C), and another quarter of the time, the high temperature is greater than and 78.9 °F (26.0 °C). About 95% of the time, the high temperature has been between 58.5 °F (14.7 °C) and 88.8 °F (31.6 °C).
Low Temperatures
On April 3 in this location the average low temperature is 47.4 °F (8.6 °C). The lowest recored low temperature was 30.9 °F (-0.6 °C) in 1999 and the lowest recored low temperature was 59.0 °F (15.0 °C) in 2022. The low temperature is usually* between 43.8 °F (6.5 °C) and 51.1 °F (10.6 °C). About a quarter of the time, the low temperature is less than 43.8 °F (6.5 °C), and another quarter of the time, the low temperature is greater than and 51.1 °F (10.6 °C). About 95% of the time, the low temperature has been between 36.7 °F (2.6 °C) and 58.2 °F (14.5 °C).
Frost
On April 3 in this location expect the temperatures to drop below freezing for a risk of frost about 0.2% 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 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
- EL MONTE AIRPORT — Integrated Surface Dataset (ISD) station ID: 747043 — Weather Bureau Army Navy (WBAN): 03165 — 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