Weather on December 15
Oceanside, CA
55 Years of Data
Avg High
66°F
Avg Low
42°F
Warmest
1996
66°F avg
Coldest
1987
45°F avg
About This Date
December 15th 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 15th was in 1996 (66°F average), while the coldest was 1987 (45°F) — a 21°F range across recorded history. Rain or other precipitation has occurred on about 7% of December 15th dates historically, with the wettest December 15th recording 3.51" of rain. The last decade has been 1.9°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.9°F cooler on this date compared to 20-30 years ago.
Planning for December 15th in Oceanside, CA? Great weather for outdoor activities.
Cooling Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 64° | 48° | 56° | — | — |
| 2024 | 66° | 38° | 52° | — | — |
| 2023 | 75° | 36° | 55° | — | — |
| 2022 | 61° | 35° | 48° | — | — |
| 2021 | 58° | 36° | 47° | — | — |
| 2020 | 71° | 35° | 53° | — | — |
| 2019 | 65° | 42° | 53° | — | — |
| 2018 | 68° | 43° | 55° | — | — |
| 2017 | 79° | 35° | 57° | — | — |
| 2016 | 67° | 47° | 57° | 1.09" | — |
| 2015 | 62° | 33° | 48° | — | — |
| 2014 | 64° | 43° | 53° | — | — |
| 2013 | 74° | 34° | 54° | — | — |
| 2012 | 59° | 47° | 53° | 0.1" | — |
| 2011 | 59° | 36° | 47° | — | — |
| 2010 | 62° | 53° | 58° | — | — |
| 2009 | 67° | 40° | 53° | — | — |
| 2008 | 57° | 43° | 50° | 3.51" | — |
| 2007 | 67° | 36° | 51° | — | — |
| 2006 | 63° | 41° | 52° | — | — |
| 2005 | 62° | 50° | 56° | — | — |
| 2004 | 72° | 41° | 56° | — | — |
| 2003 | 69° | 34° | 51° | — | — |
| 2002 | 65° | 49° | 57° | — | — |
| 2001 | 61° | 35° | 48° | — | — |
| 2000 | 62° | 38° | 50° | — | — |
| 1999 | 70° | 38° | 54° | — | — |
| 1998 | 82° | 42° | 62° | — | — |
| 1997 | 66° | 37° | 52° | — | — |
| 1996warmest | 80° | 51° | 66° | — | — |
| 1995 | 63° | 48° | 55° | — | — |
| 1994 | 58° | 41° | 49° | — | — |
| 1993 | 62° | 51° | 57° | 0.33" | — |
| 1992 | 64° | 38° | 51° | — | — |
| 1991 | 64° | 44° | 54° | — | — |
| 1990 | 61° | 44° | 52° | — | — |
| 1989 | 65° | 39° | 52° | — | — |
| 1988 | 56° | 54° | 55° | — | — |
| 1987coldest | 57° | 33° | 45° | — | — |
| 1986 | 70° | — | — | — | — |
| 1985 | 71° | 40° | 55° | — | — |
| 1984 | 59° | 38° | 48° | — | — |
| 1983 | 68° | 46° | 57° | — | — |
| 1982 | 62° | 41° | 52° | — | — |
| 1981 | 75° | 46° | 61° | — | — |
| 1980 | 69° | 41° | 55° | — | — |
| 1979 | 67° | 41° | 54° | — | — |
| 1977 | 65° | 44° | 54° | — | — |
| 1976 | 73° | 54° | 63° | — | — |
| 1975 | 72° | 48° | 60° | — | — |
| 1974 | 68° | 44° | 56° | — | — |
| 1973 | 66° | 44° | 55° | — | — |
| 1972 | 68° | 38° | 53° | — | — |
| 1971 | 61° | 41° | 51° | — | — |
54 years of data from OCEANSIDE MUNI AP