Weather on September 6
San Marcos, CA
55 Years of Data
Avg High
89°F
Avg Low
65°F
Warmest
1995
95°F avg
Coldest
2005
65°F avg
About This Date
September 6th in San Marcos, CA typically brings warm fall weather, with average highs around 89°F and lows near 65°F. Over 55 years of records, the warmest September 6th was in 1995 (95°F average), while the coldest was 2005 (65°F) — a 30°F range across recorded history. Rain or other precipitation has occurred on about 7% of September 6th dates historically, with the wettest September 6th recording 0.97" of rain. The last decade has been 6.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 6.1°F warmer on this date compared to 20-30 years ago.
Planning for September 6th in San Marcos, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 91° | 63° | 77° | — | — |
| 2024 | 112° | 75° | 93° | — | — |
| 2023 | 85° | 67° | 76° | — | — |
| 2022 | 101° | 69° | 85° | — | — |
| 2021 | 91° | 66° | 79° | — | — |
| 2020 | 115° | 75° | 95° | — | — |
| 2019 | 94° | 70° | 82° | — | — |
| 2018 | 82° | 66° | 74° | — | — |
| 2017 | 87° | 69° | 78° | — | — |
| 2016 | 82° | 57° | 70° | — | — |
| 2015 | 93° | 63° | 78° | — | — |
| 2014 | 95° | 68° | 82° | — | — |
| 2013 | 99° | 74° | 86° | — | — |
| 2012 | 90° | 67° | 78° | — | — |
| 2011 | 98° | 72° | 85° | 0.15" | — |
| 2010 | 78° | 59° | 69° | — | — |
| 2009 | 76° | 66° | 71° | — | — |
| 2008 | 78° | 64° | 71° | — | — |
| 2007 | 72° | 65° | 68° | — | — |
| 2006 | 80° | 67° | 73° | — | — |
| 2005coldest | 76° | 54° | 65° | 0.03" | — |
| 2004 | 101° | 60° | 80° | — | — |
| 2003 | 96° | 70° | 83° | — | — |
| 2002 | 78° | 66° | 72° | — | — |
| 2001 | 82° | 61° | 71° | — | — |
| 2000 | 91° | 56° | 73° | — | — |
| 1999 | 82° | 62° | 72° | — | — |
| 1998 | 87° | 68° | 78° | — | — |
| 1997 | 89° | 68° | 79° | — | — |
| 1996 | 88° | 63° | 75° | — | — |
| 1995warmest | 97° | 94° | 95° | — | — |
| 1994 | 93° | 65° | 79° | — | — |
| 1993 | 87° | 65° | 76° | — | — |
| 1992 | 89° | 61° | 75° | — | — |
| 1991 | 83° | 64° | 73° | — | — |
| 1990 | 93° | 67° | 80° | — | — |
| 1989 | 95° | 63° | 79° | — | — |
| 1988 | 100° | 67° | 83° | — | — |
| 1987 | 87° | 55° | 71° | — | — |
| 1986 | 89° | 60° | 75° | — | — |
| 1985 | 78° | 54° | 66° | — | — |
| 1984 | 102° | 65° | 83° | — | — |
| 1983 | 90° | 67° | 78° | — | — |
| 1982 | 94° | 64° | 79° | — | — |
| 1981 | 86° | 65° | 75° | — | — |
| 1980 | 82° | 60° | 71° | — | — |
| 1979 | 89° | 58° | 73° | — | — |
| 1978 | 74° | 66° | 70° | 0.97" | — |
| 1977 | 97° | 62° | 79° | — | — |
| 1976 | 74° | 67° | 70° | — | — |
| 1975 | 86° | 59° | 73° | — | — |
| 1974 | 90° | 63° | 76° | — | — |
| 1973 | 85° | 57° | 71° | — | — |
| 1972 | 79° | 67° | 73° | 0.51" | — |
| 1971 | 88° | 59° | 73° | — | — |
55 years of data from ESCONDIDO #2