Weather on July 9
San Marcos, CA
55 Years of Data
Avg High
86°F
Avg Low
62°F
Warmest
1985
85°F avg
Coldest
2010
64°F avg
About This Date
July 9th in San Marcos, CA typically brings warm summer weather, with average highs around 86°F and lows near 62°F. Over 55 years of records, the warmest July 9th was in 1985 (85°F average), while the coldest was 2010 (64°F) — a 21°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 5.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.4°F warmer on this date compared to 20-30 years ago.
Planning for July 9th in San Marcos, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 92° | 64° | 78° | — | — |
| 2024 | 96° | 66° | 81° | — | — |
| 2023 | 83° | 61° | 72° | — | — |
| 2022 | 89° | 62° | 76° | — | — |
| 2021 | 91° | 67° | 79° | — | — |
| 2020 | 90° | 61° | 75° | — | — |
| 2019 | 85° | 63° | 74° | — | — |
| 2018 | 92° | 74° | 83° | — | — |
| 2017 | 94° | 70° | 82° | — | — |
| 2016 | 93° | 61° | 77° | — | — |
| 2015 | 78° | 65° | 71° | — | — |
| 2014 | 90° | 66° | 78° | — | — |
| 2013 | 92° | 67° | 79° | — | — |
| 2012 | 88° | 60° | 74° | — | — |
| 2011 | 87° | 64° | 76° | — | — |
| 2010coldest | 67° | 62° | 64° | — | — |
| 2009 | 71° | 60° | 66° | — | — |
| 2008 | 70° | 63° | 66° | — | — |
| 2007 | 71° | 64° | 68° | — | — |
| 2006 | 80° | 69° | 75° | — | — |
| 2005 | 84° | 60° | 72° | — | — |
| 2004 | 83° | 58° | 70° | — | — |
| 2003 | 85° | 60° | 72° | — | — |
| 2002 | 95° | 61° | 78° | — | — |
| 2001 | 80° | 62° | 71° | — | — |
| 2000 | 78° | 59° | 69° | — | — |
| 1999 | 76° | 66° | 71° | — | — |
| 1998 | 89° | 63° | 76° | — | — |
| 1997 | 81° | 62° | 71° | — | — |
| 1996 | 86° | 59° | 73° | — | — |
| 1995 | 90° | 80° | 85° | — | — |
| 1994 | 87° | 63° | 75° | — | — |
| 1993 | 86° | 65° | 75° | — | — |
| 1992 | 91° | 69° | 80° | — | — |
| 1991 | 78° | 64° | 71° | — | — |
| 1990 | 83° | 61° | 72° | — | — |
| 1989 | 83° | 62° | 72° | — | — |
| 1988 | 86° | 59° | 73° | — | — |
| 1987 | 77° | 61° | 69° | — | — |
| 1986 | 84° | 60° | 72° | — | — |
| 1985warmest | 102° | 68° | 85° | — | — |
| 1984 | 96° | 70° | 83° | — | — |
| 1983 | 90° | 58° | 74° | — | — |
| 1982 | 84° | 55° | 70° | — | — |
| 1981 | 90° | 63° | 76° | — | — |
| 1980 | 88° | 56° | 72° | — | — |
| 1979 | 92° | 55° | 73° | — | — |
| 1978 | 87° | 57° | 72° | — | — |
| 1977 | 88° | 56° | 72° | — | — |
| 1976 | 88° | 61° | 74° | — | — |
| 1975 | 90° | 59° | 74° | — | — |
| 1974 | 81° | 53° | 67° | — | — |
| 1973 | 82° | 58° | 70° | — | — |
| 1972 | 90° | 59° | 74° | — | — |
| 1971 | 94° | 54° | 74° | — | — |
55 years of data from ESCONDIDO #2