Weather on September 17
Temecula, CA
55 Years of Data
Avg High
86°F
Avg Low
58°F
Warmest
2020
87°F avg
Coldest
1993
60°F avg
About This Date
September 17th in Temecula, CA typically brings warm fall weather, with average highs around 86°F and lows near 58°F — a 28°F daily swing. Over 51 years of records, the warmest September 17th was in 2020 (87°F average), while the coldest was 1993 (60°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 12% of September 17th dates historically. The last decade has been 3.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.0°F warmer on this date compared to 20-30 years ago.
Planning for September 17th in Temecula, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 94° | 67° | 81° | 0.07" | — |
| 2024 | 78° | 54° | 66° | — | — |
| 2023 | 70° | 62° | 66° | 0.07" | — |
| 2022 | 81° | 60° | 70° | — | — |
| 2021 | 81° | 58° | 69° | — | — |
| 2020warmest | 104° | 71° | 87° | — | — |
| 2019 | 85° | 58° | 72° | — | — |
| 2018 | 91° | 64° | 78° | — | — |
| 2017 | 81° | 60° | 70° | 0.06" | — |
| 2016 | 87° | 57° | 72° | — | — |
| 2015 | 82° | 59° | 70° | — | — |
| 2014 | 98° | 68° | 83° | — | — |
| 2013 | 83° | 58° | 70° | 0.02" | — |
| 2012 | 89° | 58° | 74° | — | — |
| 2011 | 80° | 57° | 68° | — | — |
| 2010 | 83° | 50° | 66° | — | — |
| 2009 | 89° | 62° | 75° | — | — |
| 2008 | 89° | 59° | 74° | — | — |
| 2007 | 71° | 54° | 62° | — | — |
| 2006 | 93° | 62° | 78° | — | — |
| 2005 | 77° | 53° | 65° | — | — |
| 2004 | 85° | 59° | 72° | — | — |
| 2003 | 80° | 54° | 67° | — | — |
| 2002 | 79° | 55° | 67° | — | — |
| 2001 | 79° | 52° | 65° | — | — |
| 2000 | 98° | 68° | 83° | — | — |
| 1999 | 73° | 54° | 63° | — | — |
| 1998 | 86° | 61° | 73° | — | — |
| 1997 | 90° | 68° | 79° | — | — |
| 1996 | 78° | 56° | 67° | — | — |
| 1995 | 85° | 62° | 73° | — | — |
| 1994 | 86° | 63° | 74° | — | — |
| 1993coldest | 70° | 51° | 60° | — | — |
| 1992 | 98° | 59° | 79° | — | — |
| 1991 | 101° | 55° | 78° | — | — |
| 1989 | 75° | 61° | 68° | 0.25" | — |
| 1988 | 76° | 54° | 65° | — | — |
| 1987 | 85° | 50° | 67° | — | — |
| 1986 | 85° | 62° | 73° | — | — |
| 1985 | 86° | 57° | 72° | — | — |
| 1984 | 106° | 61° | 83° | — | — |
| 1982 | — | 46° | — | 0.33" | — |
| 1981 | 97° | 62° | 79° | — | — |
| 1980 | 101° | 56° | 78° | — | — |
| 1979 | 100° | 60° | 80° | — | — |
| 1978 | 81° | 60° | 70° | — | — |
| 1977 | 76° | 48° | 62° | — | — |
| 1976 | 78° | 57° | 68° | — | — |
| 1975 | 96° | 63° | 79° | — | — |
| 1974 | 98° | 49° | 73° | — | — |
| 1973 | 87° | 48° | 68° | — | — |
51 years of data from FALLBROOK 5 NE