Weather on July 30
San Marcos, CA
55 Years of Data
Avg High
87°F
Avg Low
64°F
Warmest
1980
89°F avg
Coldest
1999
65°F avg
About This Date
July 30th in San Marcos, CA typically brings warm summer weather, with average highs around 87°F and lows near 64°F. Over 55 years of records, the warmest July 30th was in 1980 (89°F average), while the coldest was 1999 (65°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 4% of July 30th dates historically, with the wettest July 30th recording 0.64" of rain. The last decade has been 4.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.4°F warmer on this date compared to 20-30 years ago.
Planning for July 30th in San Marcos, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 91° | 61° | 76° | — | — |
| 2024 | 90° | 61° | 75° | — | — |
| 2023 | 95° | 68° | 82° | — | — |
| 2022 | 88° | 65° | 76° | — | — |
| 2021 | 88° | 65° | 76° | — | — |
| 2020 | 92° | 65° | 78° | — | — |
| 2019 | 89° | 66° | 78° | — | — |
| 2018 | 97° | 72° | 84° | — | — |
| 2017 | 88° | 65° | 76° | — | — |
| 2016 | 93° | 69° | 81° | — | — |
| 2015 | 89° | 69° | 79° | — | — |
| 2014 | 93° | 67° | 80° | — | — |
| 2013 | 82° | 60° | 71° | — | — |
| 2012 | 85° | 62° | 73° | — | — |
| 2011 | 98° | 66° | 82° | — | — |
| 2010 | 68° | 63° | 65° | — | — |
| 2009 | 73° | 66° | 70° | — | — |
| 2008 | 73° | 65° | 69° | — | — |
| 2007 | 90° | 65° | 77° | — | — |
| 2006 | 80° | 63° | 71° | 0.64" | — |
| 2005 | 88° | 66° | 77° | — | — |
| 2004 | 74° | 64° | 69° | — | — |
| 2003 | 89° | 66° | 78° | 0.13" | — |
| 2002 | 87° | 61° | 74° | — | — |
| 2001 | 82° | 61° | 71° | — | — |
| 2000 | 92° | 63° | 77° | — | — |
| 1999coldest | 72° | 59° | 65° | — | — |
| 1998 | 85° | 63° | 74° | — | — |
| 1997 | 81° | 65° | 73° | — | — |
| 1996 | 92° | 68° | 80° | — | — |
| 1995 | 89° | 64° | 77° | — | — |
| 1994 | 83° | 62° | 72° | — | — |
| 1993 | 87° | 60° | 74° | — | — |
| 1992 | 88° | 65° | 76° | — | — |
| 1991 | 79° | 63° | 71° | — | — |
| 1990 | 89° | 59° | 74° | — | — |
| 1989 | 88° | 62° | 75° | — | — |
| 1988 | 86° | 66° | 76° | — | — |
| 1987 | 88° | 59° | 73° | — | — |
| 1986 | 89° | 56° | 72° | — | — |
| 1985 | 85° | 60° | 72° | — | — |
| 1984 | 87° | 69° | 78° | — | — |
| 1983 | 89° | 60° | 75° | — | — |
| 1982 | 91° | 65° | 78° | — | — |
| 1981 | 85° | 59° | 72° | — | — |
| 1980warmest | 102° | 75° | 89° | — | — |
| 1979 | 94° | 60° | 77° | — | — |
| 1978 | 90° | 62° | 76° | — | — |
| 1977 | 92° | 62° | 77° | — | — |
| 1976 | 84° | 64° | 74° | — | — |
| 1975 | 82° | 62° | 72° | — | — |
| 1974 | 86° | 64° | 75° | — | — |
| 1973 | 85° | 59° | 72° | — | — |
| 1972 | 100° | 71° | 86° | — | — |
| 1971 | 94° | 59° | 76° | — | — |
55 years of data from ESCONDIDO #2