Weather on March 18
Oceanside, CA
55 Years of Data
Avg High
66°F
Avg Low
47°F
Warmest
1978
69°F avg
Coldest
1999
50°F avg
About This Date
March 18th in Oceanside, CA typically brings mild spring weather, with average highs around 66°F and lows near 47°F. Over 56 years of records, the warmest March 18th was in 1978 (69°F average), while the coldest was 1999 (50°F) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 23% of March 18th dates historically, with the wettest March 18th recording 3.38" 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 18th in Oceanside, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 83° | 50° | 66° | — | — |
| 2025 | 63° | 43° | 53° | — | — |
| 2024 | 70° | 42° | 56° | 0.1" | — |
| 2023 | 74° | 45° | 59° | — | — |
| 2022 | 72° | 40° | 56° | — | — |
| 2021 | 62° | 39° | 51° | — | — |
| 2020 | 60° | 43° | 51° | 0.64" | — |
| 2019 | 71° | 43° | 57° | — | — |
| 2018 | 61° | 41° | 51° | — | — |
| 2017 | 69° | 52° | 60° | — | — |
| 2016 | 68° | 54° | 61° | — | — |
| 2015 | 72° | 61° | 66° | — | — |
| 2014 | 71° | 50° | 61° | — | — |
| 2013 | 64° | 49° | 56° | — | — |
| 2012 | 57° | 47° | 52° | 0.15" | — |
| 2011 | 65° | 39° | 52° | 0.03" | — |
| 2010 | 66° | 42° | 54° | — | — |
| 2009 | 72° | 41° | 56° | — | — |
| 2008 | 66° | 38° | 52° | — | — |
| 2007 | 66° | 57° | 62° | — | — |
| 2006 | 59° | 45° | 52° | 0.08" | — |
| 2005 | 65° | 51° | 58° | 0.28" | — |
| 2004 | 64° | 54° | 59° | — | — |
| 2003 | 63° | 44° | 53° | — | — |
| 2002 | 61° | 40° | 50° | 0.13" | — |
| 2001 | 71° | 44° | 58° | — | — |
| 2000 | 69° | 49° | 59° | 0.03" | — |
| 1999coldest | 58° | 42° | 50° | — | — |
| 1998 | 64° | 55° | 60° | — | — |
| 1997 | 67° | 49° | 58° | — | — |
| 1996 | 59° | 55° | 57° | — | — |
| 1995 | 64° | 58° | 61° | — | — |
| 1994 | 76° | 54° | 65° | — | — |
| 1993 | 63° | 58° | 60° | — | — |
| 1992 | 62° | 48° | 55° | — | — |
| 1991 | 61° | 41° | 51° | — | — |
| 1990 | 61° | 43° | 52° | — | — |
| 1989 | 60° | 45° | 52° | — | — |
| 1988 | 65° | 44° | 54° | — | — |
| 1987 | 60° | 45° | 52° | — | — |
| 1986 | 62° | 44° | 53° | — | — |
| 1985 | 58° | 45° | 51° | 0.18" | — |
| 1984 | 68° | 46° | 57° | — | — |
| 1983 | 62° | 54° | 58° | 1.35" | — |
| 1982 | 64° | 45° | 54° | 3.38" | — |
| 1981 | 64° | 48° | 56° | — | — |
| 1980 | 66° | 44° | 55° | 0.2" | — |
| 1979 | 60° | 47° | 53° | 1.52" | — |
| 1978warmest | 90° | 49° | 69° | — | — |
| 1977 | 63° | 45° | 54° | — | — |
| 1976 | 65° | 49° | 57° | — | — |
| 1975 | 66° | 49° | 57° | — | — |
| 1974 | 65° | 52° | 58° | — | — |
| 1973 | 65° | 43° | 54° | — | — |
| 1972 | 64° | 54° | 59° | — | — |
| 1971 | 64° | 48° | 56° | — | — |
56 years of data from OCEANSIDE MUNI AP