Weather on May 16
San Marcos, CA
55 Years of Data
Avg High
74°F
Avg Low
56°F
Warmest
2014
81°F avg
Coldest
2011
56°F avg
About This Date
May 16th in San Marcos, CA typically brings pleasant spring weather, with average highs around 74°F and lows near 56°F. Over 55 years of records, the warmest May 16th was in 2014 (81°F average), while the coldest was 2011 (56°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 11% of May 16th dates historically, with the wettest May 16th recording 0.64" of rain. The last decade has been 1.0°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.0°F cooler on this date compared to 20-30 years ago.
Planning for May 16th in San Marcos, CA? Great weather for outdoor activities.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 76° | 56° | 66° | — | — |
| 2024 | 70° | 56° | 63° | — | — |
| 2023 | 82° | 58° | 70° | — | — |
| 2022 | 81° | 57° | 69° | — | — |
| 2021 | 61° | 56° | 58° | 0.05" | — |
| 2020 | 84° | 59° | 72° | — | — |
| 2019 | 68° | 58° | 63° | 0.64" | — |
| 2018 | 79° | 57° | 68° | — | — |
| 2017 | 66° | 54° | 60° | 0.2" | — |
| 2016 | 65° | 59° | 62° | — | — |
| 2015 | 70° | 54° | 62° | 0.13" | — |
| 2014warmest | 101° | 62° | 81° | — | — |
| 2013 | 78° | 59° | 69° | — | — |
| 2012 | 81° | 54° | 67° | — | — |
| 2011coldest | 66° | 46° | 56° | — | — |
| 2010 | 60° | 56° | 58° | — | — |
| 2009 | 67° | 60° | 63° | — | — |
| 2008 | 84° | 60° | 72° | — | — |
| 2007 | 62° | 57° | 60° | — | — |
| 2006 | 69° | 61° | 65° | — | — |
| 2005 | 79° | 59° | 69° | — | — |
| 2004 | 82° | 58° | 70° | — | — |
| 2003 | 80° | 35° | 58° | — | — |
| 2002 | 71° | 56° | 63° | — | — |
| 2001 | 83° | 56° | 69° | — | — |
| 2000 | 72° | 55° | 63° | — | — |
| 1999 | 71° | 54° | 62° | — | — |
| 1998 | 71° | 53° | 62° | — | — |
| 1997 | 87° | 62° | 75° | — | — |
| 1996 | 78° | 62° | 70° | — | — |
| 1995 | 70° | 49° | 59° | — | — |
| 1994 | 69° | 56° | 62° | — | — |
| 1993 | 78° | 61° | 69° | 0.05" | — |
| 1992 | 81° | 62° | 71° | — | — |
| 1991 | 80° | 52° | 66° | — | — |
| 1990 | 80° | 53° | 67° | — | — |
| 1989 | 68° | 56° | 62° | — | — |
| 1988 | 77° | 59° | 68° | — | — |
| 1987 | 73° | 59° | 66° | — | — |
| 1986 | 73° | 58° | 65° | — | — |
| 1985 | 72° | 53° | 62° | — | — |
| 1984 | 76° | 48° | 62° | — | — |
| 1983 | 75° | 55° | 65° | — | — |
| 1982 | 84° | 52° | 68° | — | — |
| 1981 | 70° | 54° | 62° | 0.13" | — |
| 1980 | 76° | 55° | 65° | — | — |
| 1979 | 75° | 56° | 65° | — | — |
| 1978 | 76° | 51° | 63° | — | — |
| 1977 | 65° | 52° | 58° | — | — |
| 1976 | 76° | 55° | 65° | — | — |
| 1975 | 65° | 54° | 59° | — | — |
| 1974 | 69° | 55° | 62° | — | — |
| 1973 | 72° | 52° | 62° | — | — |
| 1972 | 77° | 56° | 66° | — | — |
| 1971 | 70° | 56° | 63° | — | — |
55 years of data from ESCONDIDO #2