- Latitude: 33.933
- Longitude: -116.967
High Temperatures
On August 21 in this location the average high temperature is 92.5 °F (33.6 °C). The lowest recored high temperature was 62.6 °F (17.0 °C) in 2023 and the highest recored high temperature was 107.6 °F (42.0 °C) in 2020. The high temperature is usually* between 88.4 °F (31.3 °C) and 96.6 °F (35.9 °C). About a quarter of the time, the high temperature is less than 88.4 °F (31.3 °C), and another quarter of the time, the high temperature is greater than and 96.6 °F (35.9 °C). About 95% of the time, the high temperature has been between 80.6 °F (27.0 °C) and 104.4 °F (40.2 °C).
Low Temperatures
On August 21 in this location the average low temperature is 61.4 °F (16.3 °C). The lowest recored low temperature was 41.0 °F (5.0 °C) in 2021 and the lowest recored low temperature was 80.1 °F (26.7 °C) in 1978. The low temperature is usually* between 57.7 °F (14.3 °C) and 65.1 °F (18.4 °C). About a quarter of the time, the low temperature is less than 57.7 °F (14.3 °C), and another quarter of the time, the low temperature is greater than and 65.1 °F (18.4 °C). About 95% of the time, the low temperature has been between 50.7 °F (10.4 °C) and 72.1 °F (22.3 °C).
Frost
On August 21 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 2014 to 2025
- SAN BERNARDINO INTL — Integrated Surface Dataset (ISD) station ID: 722866 — from year 2009 to 2025
- HEMET RYAN — Integrated Surface Dataset (ISD) station ID: 720687 — from year 2020 to 2025
- BIG BEAR CITY AIRPORT — Integrated Surface Dataset (ISD) station ID: A06854 — Weather Bureau Army Navy (WBAN): 00115 — from year 2020 to 2025
- SAN BERNARDINO INTERNATIONAL — Integrated Surface Dataset (ISD) station ID: 722866 — Weather Bureau Army Navy (WBAN): 23122 — from year 1943 to 2013
- WARNER SPRINGS GLIDERPORT — Integrated Surface Dataset (ISD) station ID: 720165 — from year 2007 to 2012
- RIVERSIDE/MARCH AFB — Integrated Surface Dataset (ISD) station ID: 722860 — from year 2000 to 2004
- BEAUMONT — Integrated Surface Dataset (ISD) station ID: 722867 — from year 2000 to 2001
- BEAUMONT — Integrated Surface Dataset (ISD) station ID: 722867 — Weather Bureau Army Navy (WBAN): 23156 — from year 1973 to 1999
- BEAUMONT 1 E — Weather Bureau Army Navy (WBAN): 23156 — from year 1948 to 1953