Weather on May 11
San Marcos, CA
55 Years of Data
Avg High
76°F
Avg Low
54°F
Warmest
2025
79°F avg
Coldest
2010
56°F avg
About This Date
May 11th in San Marcos, CA typically brings pleasant spring weather, with average highs around 76°F and lows near 54°F. Over 55 years of records, the warmest May 11th was in 2025 (79°F average), while the coldest was 2010 (56°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 4% of May 11th dates historically. The last decade has been 1.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.5°F warmer on this date compared to 20-30 years ago.
Planning for May 11th in San Marcos, CA? Great weather for outdoor activities.
Warming Trend
0.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025warmest | 94° | 65° | 79° | — | — |
| 2024 | 76° | 58° | 67° | — | — |
| 2023 | 72° | 57° | 64° | — | — |
| 2022 | 69° | 47° | 58° | — | — |
| 2021 | 77° | 55° | 66° | — | — |
| 2020 | 80° | 60° | 70° | — | — |
| 2019 | 76° | 57° | 66° | — | — |
| 2018 | 64° | 58° | 61° | — | — |
| 2017 | 74° | 58° | 66° | — | — |
| 2016 | 77° | 59° | 68° | — | — |
| 2015 | 79° | 55° | 67° | — | — |
| 2014 | 81° | 54° | 67° | — | — |
| 2013 | 88° | 56° | 72° | — | — |
| 2012 | 72° | 55° | 63° | — | — |
| 2011 | 73° | 53° | 63° | — | — |
| 2010coldest | 61° | 51° | 56° | — | — |
| 2009 | 66° | 59° | 63° | — | — |
| 2008 | 65° | 58° | 61° | — | — |
| 2007 | 80° | 52° | 66° | — | — |
| 2006 | 68° | 61° | 64° | — | — |
| 2005 | 75° | 48° | 62° | — | — |
| 2004 | 83° | 54° | 68° | — | — |
| 2003 | 76° | 46° | 61° | — | — |
| 2002 | 72° | 53° | 62° | — | — |
| 2001 | 79° | 58° | 68° | — | — |
| 2000 | 74° | 51° | 62° | — | — |
| 1999 | 72° | 52° | 62° | — | — |
| 1998 | 66° | 53° | 60° | — | — |
| 1997 | 80° | 60° | 70° | — | — |
| 1996 | 94° | 57° | 75° | — | — |
| 1995 | 74° | 48° | 61° | — | — |
| 1994 | 73° | 56° | 64° | — | — |
| 1993 | 85° | 60° | 72° | — | — |
| 1992 | 75° | 62° | 69° | — | — |
| 1991 | 69° | 51° | 60° | — | — |
| 1990 | 67° | 56° | 61° | — | — |
| 1989 | 68° | 53° | 61° | 0.08" | — |
| 1988 | 91° | 57° | 74° | — | — |
| 1987 | 84° | 60° | 72° | — | — |
| 1986 | 76° | 55° | 65° | — | — |
| 1985 | 69° | 52° | 60° | — | — |
| 1984 | 78° | 55° | 67° | — | — |
| 1983 | 73° | 47° | 60° | — | — |
| 1982 | 64° | 50° | 57° | 0.18" | — |
| 1981 | 85° | 57° | 71° | — | — |
| 1980 | 73° | 47° | 60° | — | — |
| 1979 | 89° | 48° | 69° | — | — |
| 1978 | 78° | 50° | 64° | — | — |
| 1977 | 69° | 48° | 59° | — | — |
| 1976 | 78° | 58° | 68° | — | — |
| 1975 | 84° | 47° | 65° | — | — |
| 1974 | 77° | 57° | 67° | — | — |
| 1973 | 69° | 55° | 62° | — | — |
| 1972 | 81° | 49° | 65° | — | — |
| 1971 | 76° | 52° | 64° | — | — |
55 years of data from ESCONDIDO #2