Weather on August 28
San Marcos, CA
55 Years of Data
Avg High
89°F
Avg Low
63°F
Warmest
2015
87°F avg
Coldest
2010
66°F avg
About This Date
August 28th in San Marcos, CA typically brings warm summer weather, with average highs around 89°F and lows near 63°F — a 26°F daily swing. Over 55 years of records, the warmest August 28th was in 2015 (87°F average), while the coldest was 2010 (66°F) — a 21°F range across recorded history. Rain or other precipitation has occurred on about 2% of August 28th dates historically. The last decade has been 2.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.8°F warmer on this date compared to 20-30 years ago.
Planning for August 28th in San Marcos, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 81° | 69° | 75° | 0.03" | — |
| 2024 | 88° | 65° | 76° | — | — |
| 2023 | 101° | 69° | 85° | — | — |
| 2022 | 86° | 67° | 76° | — | — |
| 2021 | 93° | 65° | 79° | — | — |
| 2020 | 91° | 67° | 79° | — | — |
| 2019 | 87° | 68° | 78° | — | — |
| 2018 | 85° | 64° | 74° | — | — |
| 2017 | 96° | 67° | 81° | — | — |
| 2016 | 86° | 65° | 75° | — | — |
| 2015warmest | 102° | 71° | 87° | — | — |
| 2014 | 95° | 67° | 81° | — | — |
| 2013 | 95° | 70° | 82° | — | — |
| 2012 | 90° | 65° | 77° | — | — |
| 2011 | 92° | 72° | 82° | — | — |
| 2010coldest | 70° | 63° | 66° | — | — |
| 2009 | 91° | 68° | 80° | — | — |
| 2008 | 75° | 67° | 71° | — | — |
| 2007 | 91° | 65° | 78° | — | — |
| 2006 | 77° | 63° | 70° | — | — |
| 2005 | 81° | 66° | 73° | — | — |
| 2004 | 88° | 60° | 74° | — | — |
| 2003 | 92° | — | — | — | — |
| 2002 | 84° | 60° | 72° | — | — |
| 2001 | 89° | 57° | 73° | — | — |
| 2000 | 78° | 65° | 71° | — | — |
| 1999 | 93° | 58° | 75° | — | — |
| 1998 | 94° | 66° | 80° | — | — |
| 1997 | 91° | 63° | 77° | — | — |
| 1996 | 98° | 63° | 80° | — | — |
| 1995 | 97° | 63° | 80° | — | — |
| 1994 | 91° | 63° | 77° | — | — |
| 1993 | 87° | 64° | 76° | — | — |
| 1992 | 97° | 62° | 79° | — | — |
| 1991 | 83° | 57° | 70° | — | — |
| 1990 | 92° | 62° | 77° | — | — |
| 1989 | 81° | 60° | 70° | — | — |
| 1988 | 89° | 66° | 78° | — | — |
| 1987 | 84° | 59° | 72° | — | — |
| 1986 | 90° | 65° | 77° | — | — |
| 1985 | 99° | 63° | 81° | — | — |
| 1984 | 92° | 72° | 82° | — | — |
| 1983 | 96° | 62° | 79° | — | — |
| 1982 | 86° | 67° | 76° | — | — |
| 1981 | 100° | 69° | 85° | — | — |
| 1980 | — | 59° | — | — | — |
| 1979 | 86° | 62° | 74° | — | — |
| 1978 | 87° | 57° | 72° | — | — |
| 1977 | 85° | 60° | 72° | — | — |
| 1976 | 94° | 60° | 77° | — | — |
| 1975 | 88° | 48° | 68° | — | — |
| 1974 | 87° | 53° | 70° | — | — |
| 1973 | 83° | 57° | 70° | — | — |
| 1972 | 96° | 60° | 78° | — | — |
| 1971 | 93° | 61° | 77° | — | — |
55 years of data from ESCONDIDO #2