Weather on August 21
Temecula, CA
55 Years of Data
Avg High
90°F
Avg Low
61°F
Warmest
1982
90°F avg
Coldest
2002
66°F avg
About This Date
August 21st in Temecula, CA typically brings hot summer weather, with average highs around 90°F and lows near 61°F — a 29°F daily swing. Over 52 years of records, the warmest August 21st was in 1982 (90°F average), while the coldest was 2002 (66°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 2% of August 21st dates historically. The last decade has been 2.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.0°F warmer on this date compared to 20-30 years ago.
Planning for August 21st in Temecula, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 96° | 70° | 83° | — | — |
| 2024 | 97° | 63° | 80° | — | — |
| 2023 | 80° | 61° | 70° | 0.06" | — |
| 2022 | 83° | 62° | 72° | — | — |
| 2021 | 75° | 62° | 69° | — | — |
| 2020 | 96° | 71° | 84° | — | — |
| 2019 | 95° | 65° | 80° | — | — |
| 2018 | 87° | 63° | 75° | — | — |
| 2017 | 85° | 61° | 73° | — | — |
| 2016 | 89° | 60° | 75° | — | — |
| 2015 | 83° | 62° | 73° | — | — |
| 2014 | 88° | 60° | 74° | — | — |
| 2013 | 94° | 60° | 77° | — | — |
| 2012 | 87° | 64° | 76° | — | — |
| 2011 | 81° | 53° | 67° | — | — |
| 2010 | 92° | 64° | 78° | — | — |
| 2009 | 81° | 59° | 70° | — | — |
| 2008 | 84° | 56° | 70° | — | — |
| 2007 | 93° | 69° | 81° | — | — |
| 2006 | 86° | 61° | 73° | — | — |
| 2005 | 89° | 65° | 77° | — | — |
| 2004 | 81° | 57° | 69° | — | — |
| 2003 | 84° | 61° | 72° | — | — |
| 2002coldest | 77° | 56° | 66° | — | — |
| 2001 | 79° | 56° | 67° | — | — |
| 2000 | 85° | 56° | 70° | — | — |
| 1999 | 92° | 65° | 78° | — | — |
| 1998 | 96° | 67° | 81° | — | — |
| 1997 | 95° | 68° | 82° | — | — |
| 1996 | 92° | 67° | 79° | — | — |
| 1995 | 89° | 68° | 79° | — | — |
| 1994 | 82° | 58° | 70° | — | — |
| 1993 | 87° | 62° | 75° | — | — |
| 1991 | 103° | 60° | 81° | — | — |
| 1990 | 89° | 55° | 72° | — | — |
| 1989 | 84° | 58° | 71° | — | — |
| 1988 | 99° | 58° | 78° | — | — |
| 1987 | 94° | 52° | 73° | — | — |
| 1986 | 102° | 64° | 83° | — | — |
| 1985 | 96° | 50° | 73° | — | — |
| 1984 | 91° | 67° | 79° | — | — |
| 1983 | 82° | 61° | 71° | — | — |
| 1982warmest | 106° | 74° | 90° | — | — |
| 1981 | 105° | 63° | 84° | — | — |
| 1980 | 90° | 45° | 67° | — | — |
| 1979 | 89° | 58° | 73° | — | — |
| 1978 | 91° | 56° | 73° | — | — |
| 1977 | 97° | 68° | 82° | — | — |
| 1976 | 94° | 52° | 73° | — | — |
| 1975 | 85° | 51° | 68° | — | — |
| 1974 | 93° | 56° | 74° | — | — |
| 1973 | 98° | 64° | 81° | — | — |
52 years of data from FALLBROOK 5 NE