Weather on May 31
Oceanside, CA
55 Years of Data
Avg High
69°F
Avg Low
57°F
Warmest
1997
71°F avg
Coldest
1980
56°F avg
About This Date
May 31st in Oceanside, CA typically brings mild spring weather, with average highs around 69°F and lows near 57°F. Over 54 years of records, the warmest May 31st was in 1997 (71°F average), while the coldest was 1980 (56°F) — a 15°F range across recorded history. Rain or other precipitation has occurred on about 7% of May 31st dates historically. The last decade has been 1.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.3°F warmer on this date compared to 20-30 years ago.
Planning for May 31st in Oceanside, CA? Great weather for outdoor activities.
Warming Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 77° | 63° | 70° | — | — |
| 2024 | 72° | 60° | 66° | — | — |
| 2023 | 67° | 57° | 62° | 0.05" | — |
| 2022 | 71° | 55° | 63° | — | — |
| 2021 | 71° | 59° | 65° | — | — |
| 2020 | 74° | 52° | 63° | — | — |
| 2019 | 69° | 59° | 64° | — | — |
| 2018 | 72° | 58° | 65° | — | — |
| 2017 | 67° | 61° | 64° | — | — |
| 2016 | 69° | 61° | 65° | — | — |
| 2015 | 68° | 61° | 64° | — | — |
| 2014 | 74° | 51° | 62° | — | — |
| 2013 | 73° | 59° | 66° | — | — |
| 2012 | 73° | 59° | 66° | — | — |
| 2011 | 70° | 46° | 58° | — | — |
| 2010 | 71° | 56° | 63° | — | — |
| 2009 | 68° | 59° | 64° | 0.08" | — |
| 2008 | 70° | 53° | 61° | — | — |
| 2007 | 71° | 58° | 64° | — | — |
| 2006 | 77° | 54° | 65° | 0.03" | — |
| 2005 | 72° | 55° | 63° | — | — |
| 2004 | 70° | 58° | 64° | — | — |
| 2003 | 68° | 61° | 64° | — | — |
| 2002 | 73° | 56° | 64° | — | — |
| 2001 | 72° | 61° | 66° | — | — |
| 2000 | 71° | 57° | 64° | — | — |
| 1999 | 70° | 52° | 61° | — | — |
| 1998 | 64° | 51° | 58° | — | — |
| 1997warmest | 81° | 62° | 71° | — | — |
| 1996 | 66° | 52° | 59° | — | — |
| 1995 | 61° | 59° | 60° | — | — |
| 1994 | 68° | 60° | 64° | — | — |
| 1993 | 67° | 54° | 60° | — | — |
| 1992 | 68° | 63° | 65° | — | — |
| 1991 | 62° | 54° | 58° | — | — |
| 1990 | 64° | 59° | 62° | — | — |
| 1989 | 63° | 53° | 58° | — | — |
| 1988 | 65° | 48° | 56° | — | — |
| 1987 | 66° | 56° | 61° | — | — |
| 1986 | 66° | 56° | 61° | — | — |
| 1985 | 62° | 58° | 60° | — | — |
| 1984 | 71° | 65° | 68° | — | — |
| 1983 | 67° | 60° | 63° | — | — |
| 1982 | 67° | 52° | 59° | — | — |
| 1981 | 69° | 62° | 66° | — | — |
| 1980coldest | 64° | 49° | 56° | — | — |
| 1979 | 66° | 60° | 63° | — | — |
| 1978 | 68° | 60° | 64° | — | — |
| 1977 | 66° | 51° | 59° | — | — |
| 1976 | 74° | 55° | 64° | — | — |
| 1975 | 68° | 59° | 64° | — | — |
| 1974 | 70° | 59° | 64° | — | — |
| 1972 | — | 60° | — | — | — |
| 1971 | 67° | 55° | 61° | 0.05" | — |
54 years of data from OCEANSIDE MUNI AP