Weather on December 18
Oceanside, CA
55 Years of Data
Avg High
66°F
Avg Low
42°F
Warmest
1977
67°F avg
Coldest
1989
47°F avg
About This Date
December 18th in Oceanside, CA typically brings mild winter weather, with average highs around 66°F and lows near 42°F. Over 54 years of records, the warmest December 18th was in 1977 (67°F average), while the coldest was 1989 (47°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 24% of December 18th dates historically, with the wettest December 18th recording 0.84" 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 December 18th in Oceanside, CA? Great weather for outdoor activities.
Cooling Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 75° | 44° | 60° | — | — |
| 2024 | 78° | 36° | 57° | — | — |
| 2023 | 75° | 46° | 61° | 0.23" | — |
| 2022 | 64° | 36° | 50° | — | — |
| 2021 | 69° | 35° | 52° | — | — |
| 2020 | 67° | 38° | 52° | — | — |
| 2019 | 66° | 30° | 48° | — | — |
| 2018 | 66° | 45° | 55° | — | — |
| 2017 | 69° | 46° | 58° | — | — |
| 2016 | 63° | 35° | 49° | — | — |
| 2015 | 69° | 33° | 51° | — | — |
| 2014 | 65° | 47° | 56° | 0.03" | — |
| 2013 | 70° | 49° | 59° | — | — |
| 2012 | 62° | 41° | 52° | 0.76" | — |
| 2011 | 62° | 43° | 52° | — | — |
| 2010 | 62° | 58° | 60° | 0.33" | — |
| 2009 | 75° | 39° | 57° | — | — |
| 2008 | 58° | 40° | 49° | 0.03" | — |
| 2007 | 63° | 39° | 51° | 0.38" | — |
| 2006 | 62° | 36° | 49° | 0.03" | — |
| 2005 | 61° | 41° | 51° | — | — |
| 2004 | 77° | 36° | 56° | — | — |
| 2003 | 75° | 37° | 56° | — | — |
| 2002 | 59° | 39° | 49° | — | — |
| 2001 | 62° | 32° | 47° | — | — |
| 2000 | 83° | 39° | 61° | — | — |
| 1999 | 73° | 36° | 54° | — | — |
| 1998 | 60° | 59° | 60° | — | — |
| 1997 | 64° | 46° | 55° | 0.84" | — |
| 1996 | 74° | 40° | 57° | — | — |
| 1995 | 63° | 40° | 51° | — | — |
| 1994 | 60° | 37° | 49° | — | — |
| 1993 | 64° | 38° | 51° | — | — |
| 1992 | 58° | 51° | 54° | 0.28" | — |
| 1991 | 62° | 54° | 58° | 0.13" | — |
| 1990 | 60° | 40° | 50° | — | — |
| 1989coldest | 51° | 42° | 47° | — | — |
| 1988 | 59° | 45° | 52° | 0.41" | — |
| 1987 | 65° | 45° | 55° | — | — |
| 1986 | 71° | 38° | 54° | — | — |
| 1985 | 68° | 48° | 58° | — | — |
| 1984 | 58° | 44° | 51° | 0.38" | — |
| 1983 | 66° | 45° | 55° | — | — |
| 1982 | 63° | 40° | 51° | — | — |
| 1981 | 63° | 44° | 53° | — | — |
| 1980 | 67° | 48° | 57° | — | — |
| 1979 | 68° | 45° | 56° | — | — |
| 1977warmest | 78° | 56° | 67° | 0.61" | — |
| 1976 | 72° | 44° | 58° | — | — |
| 1975 | 65° | 38° | 51° | — | — |
| 1974 | 73° | 49° | 61° | — | — |
| 1973 | 67° | 46° | 56° | — | — |
| 1972 | 74° | 47° | 60° | — | — |
| 1971 | 63° | 41° | 52° | — | — |
54 years of data from OCEANSIDE MUNI AP