Weather on December 3
San Marcos, CA
55 Years of Data
Avg High
70°F
Avg Low
45°F
Warmest
2020
67°F avg
Coldest
1982
49°F avg
About This Date
December 3rd in San Marcos, CA typically brings pleasant winter weather, with average highs around 70°F and lows near 45°F — a 25°F daily swing. Over 55 years of records, the warmest December 3rd was in 2020 (67°F average), while the coldest was 1982 (49°F) — a 18°F range across recorded history. Rain or other precipitation has occurred on about 9% of December 3rd dates historically, with the wettest December 3rd recording 2.16" of rain. The last decade has been 3.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.7°F warmer on this date compared to 20-30 years ago.
Planning for December 3rd in San Marcos, CA? Great weather for outdoor activities.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 69° | 54° | 61° | — | — |
| 2024 | 73° | 47° | 60° | — | — |
| 2023 | 71° | 43° | 57° | — | — |
| 2022 | 75° | 48° | 62° | — | — |
| 2021 | 69° | 51° | 60° | — | — |
| 2020warmest | 71° | 62° | 67° | — | — |
| 2019 | 69° | 51° | 60° | — | — |
| 2018 | 68° | 42° | 55° | — | — |
| 2017 | 71° | 53° | 62° | — | — |
| 2016 | 69° | 43° | 56° | — | — |
| 2015 | 79° | 44° | 61° | — | — |
| 2014 | 66° | 60° | 63° | 2.16" | — |
| 2013 | 66° | 44° | 55° | — | — |
| 2012 | 67° | 58° | 62° | — | — |
| 2011 | 62° | 46° | 54° | — | — |
| 2010 | 71° | 42° | 57° | — | — |
| 2009 | 64° | 51° | 58° | — | — |
| 2008 | 62° | 54° | 58° | — | — |
| 2007 | 68° | 44° | 56° | — | — |
| 2006 | 75° | 45° | 60° | — | — |
| 2005 | 64° | 53° | 59° | — | — |
| 2004 | 69° | 34° | 51° | — | — |
| 2003 | 73° | 40° | 56° | — | — |
| 2002 | 70° | 42° | 56° | — | — |
| 2001 | 62° | 51° | 57° | 0.13" | — |
| 2000 | 74° | 39° | 56° | — | — |
| 1999 | 70° | 43° | 56° | — | — |
| 1998 | 66° | 49° | 57° | — | — |
| 1997 | 74° | 47° | 60° | — | — |
| 1996 | 75° | 36° | 55° | — | — |
| 1995 | 71° | 46° | 59° | — | — |
| 1994 | 64° | 41° | 53° | — | — |
| 1993 | 81° | 45° | 63° | — | — |
| 1992 | 69° | 39° | 54° | — | — |
| 1991 | 74° | 35° | 54° | — | — |
| 1990 | 82° | 40° | 61° | — | — |
| 1989 | 78° | 41° | 60° | — | — |
| 1988 | 77° | 43° | 60° | — | — |
| 1987 | 77° | 42° | 60° | — | — |
| 1986 | 79° | 41° | 60° | — | — |
| 1985 | 67° | 52° | 59° | — | — |
| 1984 | 62° | 43° | 52° | 1.68" | — |
| 1983 | 64° | 52° | 58° | 0.51" | — |
| 1982coldest | 67° | 32° | 49° | — | — |
| 1981 | 78° | 43° | 60° | — | — |
| 1980 | 66° | 45° | 55° | — | — |
| 1979 | 82° | 39° | 61° | — | — |
| 1978 | 68° | 34° | 51° | — | — |
| 1977 | 80° | 43° | 61° | — | — |
| 1976 | 78° | 38° | 58° | — | — |
| 1975 | 72° | 39° | 55° | — | — |
| 1974 | 63° | 43° | 53° | — | — |
| 1973 | 68° | 34° | 51° | — | — |
| 1972 | 67° | 45° | 56° | — | — |
| 1971 | 59° | 42° | 51° | 0.41" | — |
55 years of data from ESCONDIDO #2