Weather on September 20
Temecula, CA
55 Years of Data
About This Date
September 20th in Temecula, CA typically brings warm fall weather, with average highs around 85°F and lows near 57°F — a 28°F daily swing. Over 51 years of records, the warmest September 20th was in 2015 (89°F average), while the coldest was 2007 (57°F) — a 32°F range across recorded history. Rain or other precipitation has occurred on about 4% of September 20th dates historically, with the wettest September 20th recording 0.53" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for September 20th in Temecula, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 90° | 62° | 76° | — | — |
| 2024 | 80° | 57° | 69° | — | — |
| 2023 | 78° | 60° | 69° | 0.02" | — |
| 2022 | 87° | 57° | 72° | — | — |
| 2021 | 86° | 58° | 72° | — | — |
| 2020 | 86° | 61° | 73° | — | — |
| 2019 | 82° | 57° | 70° | — | — |
| 2018 | 80° | 56° | 68° | — | — |
| 2017 | 78° | 62° | 70° | — | — |
| 2016 | 78° | 69° | 74° | 0.53" | — |
| 2015warmest | 105° | 72° | 89° | — | — |
| 2014 | 81° | 62° | 71° | — | — |
| 2013 | 75° | 60° | 67° | — | — |
| 2012 | 96° | 65° | 81° | — | — |
| 2011 | 84° | 55° | 69° | — | — |
| 2010 | 82° | 55° | 68° | — | — |
| 2009 | 89° | 59° | 74° | — | — |
| 2008 | 79° | 58° | 68° | — | — |
| 2007coldest | 65° | 50° | 57° | — | — |
| 2006 | 80° | 57° | 69° | — | — |
| 2005 | 80° | 62° | 71° | — | — |
| 2004 | 72° | 52° | 62° | — | — |
| 2003 | 91° | 66° | 79° | — | — |
| 2002 | 90° | 67° | 78° | — | — |
| 2001 | 81° | 63° | 72° | — | — |
| 2000 | 79° | 58° | 68° | — | — |
| 1999 | 87° | 54° | 70° | — | — |
| 1998 | 73° | 57° | 65° | — | — |
| 1997 | 81° | 58° | 69° | — | — |
| 1996 | 88° | 60° | 74° | — | — |
| 1995 | 86° | 61° | 73° | — | — |
| 1994 | 86° | 56° | 71° | — | — |
| 1993 | 69° | 55° | 62° | — | — |
| 1991 | 95° | 65° | 80° | — | — |
| 1990 | 88° | 61° | 74° | — | — |
| 1989 | 83° | 46° | 64° | — | — |
| 1988 | 86° | 47° | 66° | — | — |
| 1987 | 89° | 52° | 70° | — | — |
| 1986 | 76° | 48° | 62° | — | — |
| 1985 | 86° | 49° | 67° | — | — |
| 1984 | 99° | 64° | 81° | — | — |
| 1982 | 91° | 48° | 70° | — | — |
| 1981 | 97° | 61° | 79° | — | — |
| 1980 | 85° | 51° | 68° | — | — |
| 1979 | 101° | 58° | 79° | — | — |
| 1978 | 83° | 52° | 67° | — | — |
| 1977 | 81° | 50° | 65° | — | — |
| 1976 | 74° | 60° | 67° | — | — |
| 1975 | 96° | 50° | 73° | — | — |
| 1974 | 100° | 54° | 77° | — | — |
| 1973 | 85° | 46° | 65° | — | — |
Temecula, CA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Temecula, CA Monthly Precipitation
Average rainfall per month, in inches.
Temecula, CA Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Temecula, CA
Most pleasant months in Temecula, CA: June.