Weather on December 9
Oceanside, CA
55 Years of Data
Avg High
67°F
Avg Low
42°F
Warmest
1988
65°F avg
Coldest
1971
46°F avg
About This Date
December 9th in Oceanside, CA typically brings mild winter weather, with average highs around 67°F and lows near 42°F — a 25°F daily swing. Over 54 years of records, the warmest December 9th was in 1988 (65°F average), while the coldest was 1971 (46°F) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 22% of December 9th dates historically, with the wettest December 9th recording 1.7" of rain. The last decade has been 2.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.0°F warmer on this date compared to 20-30 years ago.
Planning for December 9th in Oceanside, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 80° | 43° | 61° | — | — |
| 2024 | 65° | 38° | 51° | — | — |
| 2023 | 77° | 40° | 58° | — | — |
| 2022 | 62° | 33° | 48° | — | — |
| 2021 | 62° | 49° | 55° | 0.41" | — |
| 2020 | 73° | 39° | 56° | — | — |
| 2019 | 67° | 47° | 57° | 0.25" | — |
| 2018 | 70° | 43° | 56° | — | — |
| 2017 | 85° | 38° | 61° | — | — |
| 2016 | 65° | 42° | 53° | — | — |
| 2015 | 73° | 41° | 57° | — | — |
| 2014 | 76° | 43° | 59° | — | — |
| 2013 | 64° | 33° | 49° | — | — |
| 2012 | 64° | 42° | 53° | — | — |
| 2011 | 64° | 30° | 47° | — | — |
| 2010 | 65° | 36° | 50° | 0.03" | — |
| 2009 | 58° | 35° | 46° | — | — |
| 2008 | 76° | 42° | 59° | 0.03" | — |
| 2007 | 64° | 42° | 53° | 0.08" | — |
| 2006 | 67° | 41° | 54° | 0.79" | — |
| 2005 | 74° | 42° | 58° | — | — |
| 2004 | 63° | 44° | 53° | — | — |
| 2003 | 71° | 38° | 54° | — | — |
| 2002 | 65° | 44° | 54° | — | — |
| 2001 | 64° | 32° | 48° | 1.7" | — |
| 2000 | 64° | 50° | 57° | — | — |
| 1999 | 66° | 36° | 51° | — | — |
| 1998 | 72° | 38° | 55° | — | — |
| 1997 | 64° | 40° | 52° | — | — |
| 1996 | 62° | 46° | 54° | 0.25" | — |
| 1995 | 60° | 46° | 53° | — | — |
| 1994 | 64° | 36° | 50° | — | — |
| 1993 | 60° | 45° | 52° | — | — |
| 1992 | 62° | 43° | 52° | — | — |
| 1991 | 63° | 52° | 57° | 0.33" | — |
| 1990 | 74° | 46° | 60° | — | — |
| 1989 | 69° | 44° | 57° | — | — |
| 1988warmest | 77° | 54° | 65° | — | — |
| 1987 | 63° | 46° | 54° | — | — |
| 1986 | 68° | 37° | 53° | — | — |
| 1985 | 60° | 42° | 51° | — | — |
| 1984 | 65° | 49° | 57° | — | — |
| 1983 | 65° | 46° | 55° | 0.05" | — |
| 1982 | 70° | 55° | 62° | 0.05" | — |
| 1981 | 73° | 46° | 60° | — | — |
| 1980 | 65° | 40° | 52° | — | — |
| 1979 | 67° | 42° | 54° | — | — |
| 1977 | 65° | 51° | 58° | — | — |
| 1976 | 67° | 44° | 55° | — | — |
| 1975 | 75° | 51° | 63° | — | — |
| 1974 | 68° | 43° | 55° | — | — |
| 1973 | 78° | 47° | 62° | — | — |
| 1972 | 54° | 38° | 46° | 0.18" | — |
| 1971coldest | 59° | 34° | 46° | — | — |
54 years of data from OCEANSIDE MUNI AP