Weather on August 20
Vista, CA
55 Years of Data
Avg High
79°F
Avg Low
64°F
Warmest
1986
81°F avg
Coldest
1999
65°F avg
About This Date
August 20th in Vista, CA typically brings pleasant summer weather, with average highs around 79°F and lows near 64°F. Over 55 years of records, the warmest August 20th was in 1986 (81°F average), while the coldest was 1999 (65°F) — a 16°F range across recorded history. Rain or other precipitation has occurred on about 9% of August 20th dates historically, with the wettest August 20th recording 6.27" of rain. The last decade has been 1.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.8°F warmer on this date compared to 20-30 years ago.
Planning for August 20th in Vista, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 78° | 62° | 70° | — | — |
| 2024 | 82° | 66° | 74° | — | — |
| 2023 | 77° | 66° | 72° | 6.27" | — |
| 2022 | 74° | 67° | 70° | — | — |
| 2021 | 72° | 67° | 69° | — | — |
| 2020 | 84° | 71° | 78° | — | — |
| 2019 | 77° | 67° | 72° | — | — |
| 2018 | 77° | 70° | 73° | — | — |
| 2017 | 73° | 65° | 69° | — | — |
| 2016 | 73° | 65° | 69° | — | — |
| 2015 | 74° | 67° | 70° | — | — |
| 2014 | 74° | 66° | 70° | 0.74" | — |
| 2013 | 73° | 65° | 69° | — | — |
| 2012 | 81° | 71° | 76° | — | — |
| 2011 | 72° | 65° | 68° | — | — |
| 2010 | 78° | 66° | 72° | — | — |
| 2009 | 72° | 65° | 68° | — | — |
| 2008 | 74° | 64° | 69° | — | — |
| 2007 | 82° | 67° | 74° | — | — |
| 2006 | 73° | 65° | 69° | — | — |
| 2005 | 73° | 63° | 68° | — | — |
| 2004 | 73° | 64° | 69° | — | — |
| 2003 | 77° | 64° | 71° | 0.2" | — |
| 2002 | 71° | 64° | 68° | — | — |
| 2001 | 74° | 64° | 69° | — | — |
| 2000 | 77° | 63° | 70° | — | — |
| 1999coldest | 70° | 61° | 65° | — | — |
| 1998 | 77° | 63° | 70° | — | — |
| 1997 | 85° | 70° | 77° | — | — |
| 1996 | 85° | 58° | 71° | — | — |
| 1995 | 81° | 64° | 72° | — | — |
| 1994 | 85° | 66° | 75° | — | — |
| 1993 | 82° | 59° | 71° | — | — |
| 1992 | 93° | 67° | 80° | — | — |
| 1991 | 82° | 60° | 71° | — | — |
| 1990 | 77° | 59° | 68° | — | — |
| 1989 | 76° | 65° | 70° | — | — |
| 1988 | 74° | 62° | 68° | — | — |
| 1987 | 79° | 60° | 69° | — | — |
| 1986warmest | 95° | 66° | 81° | — | — |
| 1985 | 80° | 60° | 70° | — | — |
| 1984 | 83° | 68° | 75° | 0.03" | — |
| 1983 | 82° | 62° | 72° | — | — |
| 1982 | 90° | 63° | 76° | — | — |
| 1981 | 90° | 60° | 75° | — | — |
| 1980 | 81° | 59° | 70° | — | — |
| 1979 | 76° | 60° | 68° | 0.23" | — |
| 1978 | 81° | 56° | 68° | — | — |
| 1977 | 87° | 64° | 76° | — | — |
| 1976 | 80° | 60° | 70° | — | — |
| 1975 | 75° | 60° | 68° | — | — |
| 1974 | 76° | 60° | 68° | — | — |
| 1973 | 85° | 65° | 75° | — | — |
| 1972 | 84° | 54° | 69° | — | — |
| 1971 | 81° | 61° | 71° | — | — |
55 years of data from CARLSBAD MCCLELLAN PALOMAR AP