Weather on December 16
San Marcos, CA
55 Years of Data
About This Date
December 16th in San Marcos, CA typically brings mild winter weather, with average highs around 69°F and lows near 43°F — a 26°F daily swing. Over 55 years of records, the warmest December 16th was in 1997 (69°F average), while the coldest was 1971 (47°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 20% of December 16th dates historically, with the wettest December 16th recording 5.11" 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 16th in San Marcos, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 81° | 46° | 63° | — | — |
| 2024 | 72° | 42° | 57° | — | — |
| 2023 | 84° | 46° | 65° | — | — |
| 2022 | 72° | 45° | 58° | — | — |
| 2021 | 60° | 36° | 48° | — | — |
| 2020 | 72° | 41° | 56° | — | — |
| 2019 | 69° | 40° | 54° | — | — |
| 2018 | 74° | 44° | 59° | — | — |
| 2017 | 67° | 46° | 56° | — | — |
| 2016 | 61° | 53° | 57° | 5.11" | — |
| 2015 | 61° | 35° | 48° | — | — |
| 2014 | 61° | 49° | 55° | 0.25" | — |
| 2013 | 86° | 48° | 67° | — | — |
| 2012 | 58° | 47° | 52° | 0.05" | — |
| 2011 | 64° | 40° | 52° | — | — |
| 2010 | 58° | 52° | 55° | 0.3" | — |
| 2009 | 70° | 47° | 58° | — | — |
| 2008 | 59° | 46° | 53° | 0.33" | — |
| 2007 | 64° | 44° | 54° | — | — |
| 2006 | 59° | 48° | 54° | 0.86" | — |
| 2005 | 61° | 41° | 51° | — | — |
| 2004 | 75° | — | — | — | — |
| 2003 | 70° | 40° | 55° | — | — |
| 2002 | 66° | 46° | 56° | — | — |
| 2001 | 64° | 33° | 49° | — | — |
| 2000 | 79° | 41° | 60° | — | — |
| 1999 | 74° | 49° | 61° | — | — |
| 1998 | 83° | 44° | 63° | — | — |
| 1997warmest | 81° | 58° | 69° | — | — |
| 1996 | 76° | 43° | 59° | — | — |
| 1995 | 63° | 47° | 55° | 0.03" | — |
| 1994 | 74° | 36° | 55° | — | — |
| 1993 | 61° | 37° | 49° | — | — |
| 1992 | 64° | 37° | 51° | — | — |
| 1991 | 77° | 44° | 61° | — | — |
| 1990 | 60° | 43° | 51° | 0.15" | — |
| 1989 | 64° | 44° | 54° | — | — |
| 1988 | 58° | 52° | 55° | 0.51" | — |
| 1987 | 57° | 42° | 50° | 1.55" | — |
| 1986 | 68° | 42° | 55° | — | — |
| 1985 | 74° | 44° | 59° | — | — |
| 1984 | 57° | 45° | 51° | 0.97" | — |
| 1983 | 70° | 46° | 58° | — | — |
| 1982 | 72° | 34° | 53° | — | — |
| 1981 | 76° | 42° | 59° | — | — |
| 1980 | 88° | 45° | 66° | — | — |
| 1979 | 78° | 33° | 56° | — | — |
| 1978 | 66° | 38° | 52° | — | — |
| 1977 | 69° | 48° | 59° | — | — |
| 1976 | 77° | 38° | 57° | — | — |
| 1975 | 65° | 29° | 47° | — | — |
| 1974 | 82° | 41° | 62° | — | — |
| 1973 | 80° | 38° | 59° | — | — |
| 1972 | 76° | 35° | 55° | — | — |
| 1971coldest | 64° | 30° | 47° | — | — |
San Marcos, CA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
San Marcos, CA Monthly Precipitation
Average rainfall per month, in inches.
San Marcos, CA Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit San Marcos, CA
Most pleasant months in San Marcos, CA: June.