- Latitude: 34.1
- Longitude: -117.25
High Temperatures
On February 29 in this location the average high temperature is 67.3 °F (19.6 °C). The lowest recored high temperature was 55.4 °F (13.0 °C) in 2012 and the highest recored high temperature was 86.0 °F (30.0 °C) in 2016. The high temperature is usually* between 61.4 °F (16.4 °C) and 73.1 °F (22.8 °C). About a quarter of the time, the high temperature is less than 61.4 °F (16.4 °C), and another quarter of the time, the high temperature is greater than and 73.1 °F (22.8 °C). About 95% of the time, the high temperature has been between 50.3 °F (10.2 °C) and 84.2 °F (29.0 °C).
Low Temperatures
On February 29 in this location the average low temperature is 43.0 °F (6.1 °C). The lowest recored low temperature was 30.9 °F (-0.6 °C) in 1996 and the lowest recored low temperature was 57.2 °F (14.0 °C) in 2016. The low temperature is usually* between 39.2 °F (4.0 °C) and 46.8 °F (8.2 °C). About a quarter of the time, the low temperature is less than 39.2 °F (4.0 °C), and another quarter of the time, the low temperature is greater than and 46.8 °F (8.2 °C). About 95% of the time, the low temperature has been between 31.9 °F (-0.0 °C) and 54.1 °F (12.3 °C).
Frost
On February 29 in this location expect the temperatures to drop below freezing for a risk of frost about 2.6% 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 1936 to 2024
- ONTARIO INTERNATIONAL ARPT — Integrated Surface Dataset (ISD) station ID: 747040 — Weather Bureau Army Navy (WBAN): 03102 — from year 2008 to 2024
- RIVERSIDE MUNICIPAL ARPT — Integrated Surface Dataset (ISD) station ID: 722869 — Weather Bureau Army Navy (WBAN): 03171 — from year 2012 to 2024
- SAN BERNARDINO INTL — Integrated Surface Dataset (ISD) station ID: 722866 — from year 2012 to 2024
- NORTON AAF — Weather Bureau Army Navy (WBAN): 23122 — from year 2016 to 2020
- RIVERSIDE MUNI — Integrated Surface Dataset (ISD) station ID: 722869 — from year 2000 to 2004
- 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 2004 to 2004
- ONTARIO — Integrated Surface Dataset (ISD) station ID: 722865 — from year 2000 to 2000
- BEAUMONT — Integrated Surface Dataset (ISD) station ID: 722867 — from year 2000 to 2000
- ONTARIO — Integrated Surface Dataset (ISD) station ID: 722865 — Weather Bureau Army Navy (WBAN): 93180 — from year 1944 to 1996
- BEAUMONT — Integrated Surface Dataset (ISD) station ID: 722867 — Weather Bureau Army Navy (WBAN): 23156 — from year 1976 to 1996
- SAN BERNARDINO INTERNATIONAL — Integrated Surface Dataset (ISD) station ID: 722866 — Weather Bureau Army Navy (WBAN): 23122 — from year 1944 to 1992
- ONTARIO INTERNATIONAL ARPT — Weather Bureau Army Navy (WBAN): 03102 — from year 1968 to 1972
- BEAUMONT 1 E — Weather Bureau Army Navy (WBAN): 23156 — from year 1948 to 1952