Weather on December 11
San Marcos, CA
55 Years of Data
Avg High
68°F
Avg Low
44°F
Warmest
2025
67°F avg
Coldest
1972
45°F avg
About This Date
December 11th in San Marcos, CA typically brings mild winter weather, with average highs around 68°F and lows near 44°F. Over 55 years of records, the warmest December 11th was in 2025 (67°F average), while the coldest was 1972 (45°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 20% of December 11th dates historically, with the wettest December 11th recording 1.96" of rain. The last decade has been 2.9°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.9°F warmer on this date compared to 20-30 years ago.
Planning for December 11th in San Marcos, CA? Great weather for outdoor activities.
Warming Trend
1.2°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025warmest | 86° | 49° | 67° | — | — |
| 2024 | 75° | 41° | 58° | — | — |
| 2023 | 74° | 43° | 58° | — | — |
| 2022 | 55° | 50° | 53° | 1.83" | — |
| 2021 | 70° | 38° | 54° | — | — |
| 2020 | 65° | 45° | 55° | — | — |
| 2019 | 68° | 44° | 56° | — | — |
| 2018 | 67° | 49° | 58° | — | — |
| 2017 | 81° | 52° | 66° | — | — |
| 2016 | 68° | 56° | 62° | — | — |
| 2015 | 60° | 54° | 57° | 0.91" | — |
| 2014 | 70° | 56° | 63° | — | — |
| 2013 | 73° | 43° | 58° | — | — |
| 2012 | 76° | 43° | 59° | — | — |
| 2011 | 60° | 39° | 50° | — | — |
| 2010 | 79° | 47° | 63° | — | — |
| 2009 | 60° | 50° | 55° | 0.36" | — |
| 2008 | 70° | 50° | 60° | — | — |
| 2007 | 63° | 47° | 55° | 0.13" | — |
| 2006 | 66° | 49° | 57° | 0.03" | — |
| 2005 | 75° | 44° | 60° | — | — |
| 2004 | 83° | 47° | 65° | — | — |
| 2003 | 59° | 50° | 55° | — | — |
| 2002 | 70° | 49° | 59° | — | — |
| 2001 | 59° | 40° | 49° | — | — |
| 2000 | 65° | — | — | — | — |
| 1999 | 69° | 35° | 52° | — | — |
| 1998 | 70° | 36° | 53° | — | — |
| 1997 | 66° | 36° | 51° | — | — |
| 1996 | 61° | 55° | 58° | 1.96" | — |
| 1995 | 75° | 42° | 59° | — | — |
| 1994 | 63° | 36° | 49° | — | — |
| 1993 | 67° | 48° | 57° | 0.2" | — |
| 1992 | 63° | 46° | 54° | 0.08" | — |
| 1991 | 62° | 54° | 58° | 0.25" | — |
| 1990 | 76° | 44° | 60° | — | — |
| 1989 | 67° | 38° | 52° | — | — |
| 1988 | 78° | 40° | 59° | — | — |
| 1987 | 76° | 46° | 61° | — | — |
| 1986 | 66° | 35° | 51° | — | — |
| 1985 | 52° | 42° | 47° | 1.12" | — |
| 1984 | 64° | 46° | 55° | 1.8" | — |
| 1983 | 61° | 40° | 50° | — | — |
| 1982 | 68° | 43° | 55° | — | — |
| 1981 | 66° | 48° | 57° | — | — |
| 1980 | 79° | 40° | 59° | — | — |
| 1979 | 64° | 46° | 55° | — | — |
| 1978 | 79° | 36° | 57° | — | — |
| 1977 | 65° | 52° | 58° | — | — |
| 1976 | 77° | 38° | 57° | — | — |
| 1975 | 61° | 49° | 55° | — | — |
| 1974 | 68° | 33° | 51° | — | — |
| 1973 | 73° | 39° | 56° | — | — |
| 1972coldest | 54° | 36° | 45° | — | — |
| 1971 | 59° | 36° | 47° | — | — |
55 years of data from ESCONDIDO #2