- Latitude: 33.42
- Longitude: -117.62
High Temperatures
On May 21 in this location the average high temperature is 71.4 °F (21.9 °C). The lowest recored high temperature was 57.9 °F (14.4 °C) in 1991 and the highest recored high temperature was 93.0 °F (33.9 °C) in 2017. The high temperature is usually* between 68.2 °F (20.1 °C) and 74.6 °F (23.6 °C). About a quarter of the time, the high temperature is less than 68.2 °F (20.1 °C), and another quarter of the time, the high temperature is greater than and 74.6 °F (23.6 °C). About 95% of the time, the high temperature has been between 62.1 °F (16.7 °C) and 80.7 °F (27.0 °C).
Low Temperatures
On May 21 in this location the average low temperature is 54.7 °F (12.6 °C). The lowest recored low temperature was 7.9 °F (-13.4 °C) in 1994 and the lowest recored low temperature was 64.9 °F (18.3 °C) in 1976. The low temperature is usually* between 51.5 °F (10.8 °C) and 57.8 °F (14.3 °C). About a quarter of the time, the low temperature is less than 51.5 °F (10.8 °C), and another quarter of the time, the low temperature is greater than and 57.8 °F (14.3 °C). About 95% of the time, the low temperature has been between 45.5 °F (7.5 °C) and 63.8 °F (17.7 °C).
Frost
On May 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:
- MARINE CORPS AIR STATION — Integrated Surface Dataset (ISD) station ID: 722926 — Weather Bureau Army Navy (WBAN): 03154 — from year 1973 to 2025
- OCEANSIDE MUNICIPAL ARPT — Integrated Surface Dataset (ISD) station ID: 722934 — Weather Bureau Army Navy (WBAN): 53121 — from year 2006 to 2025
- MCOLF CAMP PENDLETON RED BEAC — Integrated Surface Dataset (ISD) station ID: 722928 — Weather Bureau Army Navy (WBAN): 00369 — from year 2016 to 2022
- MCOLF CAMP PENDLETON (RED BEA — Integrated Surface Dataset (ISD) station ID: 722928 — from year 2010 to 2015
- OCEANSIDE MUNI — Integrated Surface Dataset (ISD) station ID: 722934 — from year 2000 to 2005
- EL TORO MCAS — Integrated Surface Dataset (ISD) station ID: 690140 — Weather Bureau Army Navy (WBAN): 93101 — from year 1989 to 1998
- NEWPORT BEACH — Integrated Surface Dataset (ISD) station ID: 722973 — from year 1982 to 1996
- OCEANSIDE HARBOR — Integrated Surface Dataset (ISD) station ID: 722929 — from year 1985 to 1996
- EL TORO MCAS — Weather Bureau Army Navy (WBAN): 93101 — from year 1945 to 1988
- EL TORO(USMC) — Integrated Surface Dataset (ISD) station ID: 722908 — from year 1973 to 1988
- CAMP PENDLETON MCAS — Weather Bureau Army Navy (WBAN): 03154 — from year 1967 to 1971
- OCEANSIDE CAA AP — Weather Bureau Army Navy (WBAN): 23181 — from year 1949 to 1951