Weather on March 31
Oceanside, CA
55 Years of Data
Avg High
67°F
Avg Low
48°F
Warmest
2026
66°F avg
Coldest
1977
51°F avg
About This Date
March 31st in Oceanside, CA typically brings mild spring weather, with average highs around 67°F and lows near 48°F. Over 56 years of records, the warmest March 31st was in 2026 (66°F average), while the coldest was 1977 (51°F) — a 15°F range across recorded history. Rain or other precipitation has occurred on about 23% of March 31st dates historically, with the wettest March 31st recording 1.78" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for March 31st in Oceanside, CA? Great weather for outdoor activities.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026warmest | 70° | 62° | 66° | 0.05" | — |
| 2025 | 62° | 54° | 58° | 0.23" | — |
| 2024 | 67° | 50° | 58° | 1.17" | — |
| 2023 | 62° | 42° | 52° | — | — |
| 2022 | 66° | 56° | 61° | 0.03" | — |
| 2021 | 84° | 40° | 62° | — | — |
| 2020 | 68° | 49° | 58° | — | — |
| 2019 | 78° | 44° | 61° | — | — |
| 2018 | 64° | 50° | 57° | — | — |
| 2017 | 68° | 45° | 56° | — | — |
| 2016 | 66° | 38° | 52° | — | — |
| 2015 | 70° | 58° | 64° | — | — |
| 2014 | 68° | 45° | 56° | — | — |
| 2013 | 72° | 53° | 62° | — | — |
| 2012 | 62° | 52° | 57° | 0.38" | — |
| 2011 | 80° | 50° | 65° | 0.03" | — |
| 2010 | 64° | 43° | 53° | — | — |
| 2009 | 67° | 41° | 54° | — | — |
| 2008 | 62° | 45° | 53° | — | — |
| 2007 | 71° | 40° | 55° | — | — |
| 2006 | 61° | 46° | 53° | 0.05" | — |
| 2005 | 81° | 48° | 64° | — | — |
| 2004 | 65° | 53° | 59° | — | — |
| 2003 | 80° | 48° | 64° | — | — |
| 2002 | 63° | 55° | 59° | — | — |
| 2001 | 66° | 58° | 62° | — | — |
| 2000 | 81° | 39° | 60° | — | — |
| 1999 | 57° | 52° | 54° | 0.28" | — |
| 1998 | 61° | 45° | 53° | — | — |
| 1997 | 62° | 55° | 59° | — | — |
| 1996 | 61° | 46° | 53° | — | — |
| 1995 | 66° | 46° | 56° | — | — |
| 1994 | 69° | 52° | 60° | — | — |
| 1993 | 62° | 48° | 55° | — | — |
| 1992 | 62° | 51° | 57° | 0.79" | — |
| 1991 | 63° | 47° | 55° | — | — |
| 1990 | 59° | 48° | 54° | — | — |
| 1989 | 63° | 51° | 57° | — | — |
| 1988 | 73° | 46° | 60° | — | — |
| 1987 | 68° | 47° | 57° | — | — |
| 1986 | 64° | 51° | 58° | — | — |
| 1985 | 66° | 43° | 54° | — | — |
| 1984 | 66° | 47° | 56° | — | — |
| 1983 | 66° | 51° | 59° | — | — |
| 1982 | 66° | 42° | 54° | 0.03" | — |
| 1981 | 75° | 48° | 62° | — | — |
| 1980 | 65° | 48° | 56° | — | — |
| 1979 | 63° | 43° | 53° | — | — |
| 1978 | 69° | 55° | 62° | 1.78" | — |
| 1977coldest | 62° | 40° | 51° | — | — |
| 1976 | 71° | 48° | 60° | — | — |
| 1975 | 66° | 42° | 54° | 0.03" | — |
| 1974 | 67° | 49° | 58° | 0.08" | — |
| 1973 | 66° | 46° | 56° | — | — |
| 1972 | 67° | 44° | 55° | — | — |
| 1971 | 67° | 53° | 60° | — | — |
56 years of data from OCEANSIDE MUNI AP