Weather on July 18
Vacaville, CA
55 Years of Data
Avg High
94°F
Avg Low
59°F
Warmest
1988
89°F avg
Coldest
1983
65°F avg
About This Date
July 18th in Vacaville, CA typically brings hot summer weather, with average highs around 94°F and lows near 59°F — a 35°F daily swing. Over 55 years of records, the warmest July 18th was in 1988 (89°F average), while the coldest was 1983 (65°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 2% of July 18th dates historically. 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 July 18th in Vacaville, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.0°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 92° | 57° | 74° | — | — |
| 2024 | 102° | 60° | 81° | — | — |
| 2023 | 93° | 63° | 78° | — | — |
| 2022 | 101° | 68° | 84° | — | — |
| 2021 | 101° | 59° | 80° | — | — |
| 2020 | 100° | 58° | 79° | — | — |
| 2019 | 87° | 63° | 75° | — | — |
| 2018 | 105° | 62° | 84° | — | — |
| 2017 | 88° | 63° | 75° | — | — |
| 2016 | 87° | 56° | 71° | — | — |
| 2015 | 94° | 68° | 81° | — | — |
| 2014 | 87° | 60° | 74° | — | — |
| 2013 | 96° | 54° | 75° | — | — |
| 2012 | 82° | 54° | 68° | — | — |
| 2011 | 84° | 55° | 70° | — | — |
| 2010 | 103° | 62° | 82° | — | — |
| 2009 | 106° | 65° | 85° | — | — |
| 2008 | 98° | 56° | 77° | — | — |
| 2007 | 86° | 63° | 74° | 0.23" | — |
| 2006 | 103° | 70° | 86° | — | — |
| 2005 | 101° | 65° | 83° | — | — |
| 2004 | 100° | 68° | 84° | — | — |
| 2003 | 107° | 66° | 87° | — | — |
| 2002 | 93° | 57° | 75° | — | — |
| 2001 | 91° | 55° | 73° | — | — |
| 2000 | 92° | 52° | 72° | — | — |
| 1999 | 86° | 52° | 69° | — | — |
| 1998 | 107° | 61° | 84° | — | — |
| 1997 | 96° | 57° | 77° | — | — |
| 1996 | 90° | 55° | 72° | — | — |
| 1995 | 95° | 61° | 78° | — | — |
| 1994 | 101° | 54° | 77° | — | — |
| 1993 | 95° | 61° | 78° | — | — |
| 1992 | 95° | 56° | 75° | — | — |
| 1991 | 92° | 58° | 75° | — | — |
| 1990 | 100° | 66° | 83° | — | — |
| 1989 | 100° | 65° | 82° | — | — |
| 1988warmest | 109° | 70° | 89° | — | — |
| 1987 | 75° | 55° | 65° | — | — |
| 1986 | 86° | 47° | 66° | — | — |
| 1985 | 92° | 52° | 72° | — | — |
| 1984 | 96° | 66° | 81° | — | — |
| 1983coldest | 76° | 54° | 65° | — | — |
| 1982 | 89° | 52° | 70° | — | — |
| 1981 | 97° | 51° | 74° | — | — |
| 1980 | 94° | 53° | 73° | — | — |
| 1979 | 101° | 51° | 76° | — | — |
| 1978 | 98° | 61° | 79° | — | — |
| 1977 | 99° | 61° | 80° | — | — |
| 1976 | 84° | 58° | 71° | — | — |
| 1975 | 83° | 55° | 69° | — | — |
| 1974 | 95° | 58° | 76° | — | — |
| 1973 | 84° | 49° | 66° | — | — |
| 1972 | 85° | 59° | 72° | — | — |
| 1971 | 100° | 62° | 81° | — | — |
55 years of data from VACAVILLE/NUT TREE AP ASOS