Weather on September 15
Temecula, CA
55 Years of Data
Avg High
88°F
Avg Low
60°F
Warmest
2012
92°F avg
Coldest
1993
62°F avg
About This Date
September 15th in Temecula, CA typically brings warm fall weather, with average highs around 88°F and lows near 60°F — a 28°F daily swing. Over 51 years of records, the warmest September 15th was in 2012 (92°F average), while the coldest was 1993 (62°F) — a 30°F range across recorded history. Rain or other precipitation has occurred on about 2% of September 15th dates historically, with the wettest September 15th recording 2.55" of rain. The last decade has been 1.9°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.9°F warmer on this date compared to 20-30 years ago.
Planning for September 15th in Temecula, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 94° | 60° | 77° | — | — |
| 2024 | 78° | 61° | 69° | — | — |
| 2023 | 78° | 60° | 69° | — | — |
| 2022 | 82° | 61° | 71° | — | — |
| 2021 | 85° | 55° | 70° | — | — |
| 2020 | 96° | 67° | 82° | — | — |
| 2019 | 99° | 71° | 85° | — | — |
| 2018 | 92° | 63° | 77° | — | — |
| 2017 | 78° | 60° | 69° | — | — |
| 2016 | 83° | 56° | 69° | — | — |
| 2015 | 77° | 64° | 70° | 2.55" | — |
| 2014 | 105° | 76° | 91° | — | — |
| 2013 | 95° | 64° | 80° | — | — |
| 2012warmest | 107° | 77° | 92° | — | — |
| 2011 | 81° | 58° | 69° | — | — |
| 2010 | 85° | 58° | 71° | — | — |
| 2009 | 83° | 60° | 71° | — | — |
| 2008 | 94° | 62° | 78° | — | — |
| 2007 | 84° | 59° | 72° | — | — |
| 2006 | 70° | 55° | 62° | — | — |
| 2005 | 74° | 53° | 63° | — | — |
| 2004 | 80° | 58° | 69° | — | — |
| 2003 | 86° | 60° | 73° | — | — |
| 2002 | 94° | 62° | 78° | — | — |
| 2001 | 88° | 65° | 76° | — | — |
| 2000 | 96° | 69° | 83° | — | — |
| 1999 | 76° | 56° | 66° | — | — |
| 1998 | 85° | 62° | 73° | — | — |
| 1997 | 74° | 68° | 71° | — | — |
| 1996 | 77° | 57° | 67° | — | — |
| 1995 | 96° | 62° | 79° | — | — |
| 1994 | 96° | 64° | 80° | — | — |
| 1993coldest | 70° | 55° | 62° | — | — |
| 1992 | 93° | 56° | 74° | — | — |
| 1989 | 98° | 64° | 81° | — | — |
| 1988 | 94° | 53° | 73° | — | — |
| 1987 | 91° | 51° | 71° | — | — |
| 1986 | 85° | 58° | 71° | — | — |
| 1985 | 93° | 51° | 72° | — | — |
| 1984 | 105° | 65° | 85° | — | — |
| 1983 | 97° | 61° | 79° | — | — |
| 1982 | 78° | 56° | 67° | — | — |
| 1981 | 100° | 62° | 81° | — | — |
| 1980 | 85° | 48° | 66° | — | — |
| 1979 | 101° | 70° | 85° | — | — |
| 1978 | 82° | 54° | 68° | — | — |
| 1977 | 81° | 53° | 67° | — | — |
| 1976 | 80° | 61° | 70° | — | — |
| 1975 | 97° | 55° | 76° | — | — |
| 1974 | 92° | 50° | 71° | — | — |
| 1973 | 86° | 49° | 67° | — | — |
51 years of data from FALLBROOK 5 NE