Weather on May 19
San Marcos, CA
55 Years of Data
Avg High
76°F
Avg Low
55°F
Warmest
1986
75°F avg
Coldest
1974
56°F avg
About This Date
May 19th in San Marcos, CA typically brings pleasant spring weather, with average highs around 76°F and lows near 55°F. Over 55 years of records, the warmest May 19th was in 1986 (75°F average), while the coldest was 1974 (56°F) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 9% of May 19th dates historically, with the wettest May 19th recording 0.99" of rain. The last decade has been 1.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.2°F warmer on this date compared to 20-30 years ago.
Planning for May 19th in San Marcos, CA? Great weather for outdoor activities.
Warming Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 87° | 52° | 69° | — | — |
| 2024 | 78° | 56° | 67° | — | — |
| 2023 | 76° | 59° | 67° | — | — |
| 2022 | 78° | 57° | 68° | — | — |
| 2021 | 78° | 57° | 68° | — | — |
| 2020 | 72° | 56° | 64° | — | — |
| 2019 | 66° | 56° | 61° | 0.99" | — |
| 2018 | 71° | 58° | 64° | — | — |
| 2017 | 90° | 54° | 72° | — | — |
| 2016 | 78° | 61° | 69° | — | — |
| 2015 | 74° | 56° | 65° | — | — |
| 2014 | 76° | 61° | 68° | — | — |
| 2013 | 76° | 57° | 66° | — | — |
| 2012 | 77° | 57° | 67° | — | — |
| 2011 | 69° | 50° | 60° | — | — |
| 2010 | 63° | 55° | 59° | — | — |
| 2009 | 69° | 61° | 65° | — | — |
| 2008 | 79° | 65° | 72° | — | — |
| 2007 | 64° | 59° | 62° | — | — |
| 2006 | 67° | 61° | 64° | — | — |
| 2005 | 85° | 54° | 69° | — | — |
| 2004 | 74° | 57° | 65° | — | — |
| 2003 | 67° | 53° | 60° | — | — |
| 2002 | 67° | 55° | 61° | 0.25" | — |
| 2001 | 74° | 59° | 66° | — | — |
| 2000 | 86° | 55° | 71° | — | — |
| 1999 | 74° | 53° | 63° | — | — |
| 1998 | 76° | 49° | 62° | — | — |
| 1997 | 78° | 62° | 70° | — | — |
| 1996 | 79° | 61° | 70° | — | — |
| 1995 | 76° | 55° | 65° | — | — |
| 1994 | 69° | 47° | 58° | — | — |
| 1993 | 81° | 53° | 67° | — | — |
| 1992 | 81° | 57° | 69° | — | — |
| 1991 | 69° | 48° | 59° | — | — |
| 1990 | 72° | 54° | 63° | — | — |
| 1989 | 78° | 57° | 68° | — | — |
| 1988 | 82° | 54° | 68° | — | — |
| 1987 | 73° | 57° | 65° | — | — |
| 1986warmest | 87° | 62° | 75° | — | — |
| 1985 | 75° | 56° | 65° | — | — |
| 1984 | 81° | 53° | 67° | — | — |
| 1983 | 87° | 52° | 69° | — | — |
| 1982 | 77° | 49° | 63° | — | — |
| 1981 | 78° | 55° | 67° | — | — |
| 1980 | 79° | 57° | 68° | — | — |
| 1979 | 74° | 55° | 64° | 0.51" | — |
| 1978 | 89° | 54° | 71° | — | — |
| 1977 | 74° | 43° | 58° | — | — |
| 1976 | 77° | 60° | 69° | — | — |
| 1975 | 63° | 55° | 59° | — | — |
| 1974coldest | 65° | 48° | 56° | 0.15" | — |
| 1973 | 75° | 55° | 65° | — | — |
| 1972 | 64° | 51° | 58° | 0.48" | — |
| 1971 | 86° | 46° | 66° | — | — |
55 years of data from ESCONDIDO #2