Weather on December 1
San Marcos, CA
55 Years of Data
About This Date
December 1st in San Marcos, CA typically brings pleasant winter weather, with average highs around 71°F and lows near 43°F — a 28°F daily swing. Over 55 years of records, the warmest December 1st was in 2021 (66°F average), while the coldest was 1991 (46°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 11% of December 1st dates historically. The last decade has been 4.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.4°F warmer on this date compared to 20-30 years ago.
Planning for December 1st in San Marcos, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 72° | 45° | 58° | — | — |
| 2024 | 78° | 50° | 64° | — | — |
| 2023 | 67° | 50° | 58° | — | — |
| 2022 | 61° | 53° | 57° | — | — |
| 2021warmest | 84° | 49° | 66° | — | — |
| 2020 | 78° | 43° | 60° | — | — |
| 2019 | 68° | 44° | 56° | — | — |
| 2018 | 64° | 50° | 57° | — | — |
| 2017 | 76° | 48° | 62° | — | — |
| 2016 | 66° | 45° | 55° | — | — |
| 2015 | 70° | 39° | 54° | — | — |
| 2014 | 71° | 51° | 61° | — | — |
| 2013 | 80° | 48° | 64° | — | — |
| 2012 | 69° | 57° | 63° | 0.03" | — |
| 2011 | 63° | 47° | 55° | — | — |
| 2010 | 73° | 37° | 55° | — | — |
| 2009 | 65° | 49° | 57° | — | — |
| 2008 | 69° | 50° | 60° | — | — |
| 2007 | 58° | 49° | 53° | 0.15" | — |
| 2006 | 68° | 43° | 55° | — | — |
| 2005 | 75° | 42° | 59° | — | — |
| 2004 | 64° | 30° | 47° | — | — |
| 2003 | 70° | 40° | 55° | — | — |
| 2002 | 67° | 43° | 55° | — | — |
| 2001 | 66° | 38° | 52° | — | — |
| 2000 | 67° | 42° | 54° | — | — |
| 1999 | 73° | 48° | 61° | — | — |
| 1998 | 64° | 46° | 55° | — | — |
| 1997 | 67° | 49° | 58° | 0.46" | — |
| 1996 | 68° | 37° | 53° | — | — |
| 1995 | 78° | 45° | 61° | — | — |
| 1994 | 75° | 39° | 57° | — | — |
| 1993 | 73° | 50° | 62° | — | — |
| 1992 | 75° | 36° | 55° | — | — |
| 1991coldest | 63° | 29° | 46° | — | — |
| 1990 | 77° | 40° | 58° | — | — |
| 1989 | 78° | 38° | 58° | — | — |
| 1988 | 81° | 44° | 62° | — | — |
| 1987 | 69° | 40° | 54° | — | — |
| 1986 | 80° | 40° | 60° | — | — |
| 1985 | 62° | 42° | 52° | — | — |
| 1984 | 68° | 45° | 56° | — | — |
| 1983 | 67° | 54° | 60° | 0.1" | — |
| 1982 | 59° | 51° | 55° | 0.1" | — |
| 1981 | 70° | 38° | 54° | — | — |
| 1980 | 66° | 43° | 54° | — | — |
| 1979 | 84° | 41° | 63° | — | — |
| 1978 | 60° | 40° | 50° | — | — |
| 1977 | 80° | 47° | 63° | — | — |
| 1976 | 83° | 38° | 60° | — | — |
| 1975 | 74° | 36° | 55° | — | — |
| 1974 | 72° | 38° | 55° | — | — |
| 1973 | 61° | 36° | 48° | 0.48" | — |
| 1972 | 82° | 36° | 59° | — | — |
| 1971 | 60° | 38° | 49° | — | — |
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.