Weather on September 19
Antioch, CA
55 Years of Data
Avg High
84°F
Avg Low
56°F
Warmest
1984
85°F avg
Coldest
1989
58°F avg
About This Date
September 19th in Antioch, CA typically brings warm fall weather, with average highs around 84°F and lows near 56°F — a 28°F daily swing. Over 55 years of records, the warmest September 19th was in 1984 (85°F average), while the coldest was 1989 (58°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 7% of September 19th dates historically, with the wettest September 19th recording 1.68" of rain. The last decade has been 4.0°F cooler on this date compared to 20-30 years ago.
The last decade has been 4.0°F cooler on this date compared to 20-30 years ago.
Planning for September 19th in Antioch, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 78° | 60° | 69° | — | — |
| 2024 | 73° | 57° | 65° | — | — |
| 2023 | 73° | 55° | 64° | — | — |
| 2022 | 69° | 54° | 61° | — | — |
| 2021 | 75° | 54° | 64° | — | — |
| 2020 | 87° | 59° | 73° | — | — |
| 2019 | 78° | 57° | 68° | — | — |
| 2018 | 81° | 59° | 70° | — | — |
| 2017 | 72° | 51° | 61° | — | — |
| 2016 | 96° | 64° | 80° | — | — |
| 2015 | 93° | 57° | 75° | — | — |
| 2014 | 86° | 64° | 75° | — | — |
| 2013 | 90° | 56° | 73° | — | — |
| 2012 | 93° | 54° | 73° | — | — |
| 2011 | 99° | 63° | 81° | — | — |
| 2010 | 74° | 57° | 65° | — | — |
| 2009 | 92° | 62° | 77° | — | — |
| 2008 | 78° | 55° | 67° | — | — |
| 2007 | 85° | 57° | 71° | — | — |
| 2006 | 80° | 60° | 70° | — | — |
| 2005 | 87° | 54° | 70° | — | — |
| 2004 | 72° | 48° | 60° | — | — |
| 2003 | 92° | 59° | 75° | — | — |
| 2002 | 93° | 63° | 78° | — | — |
| 2001 | 87° | 53° | 70° | — | — |
| 2000 | 101° | 67° | 84° | — | — |
| 1999 | 77° | 56° | 66° | — | — |
| 1998 | 85° | 60° | 72° | — | — |
| 1997 | 85° | 55° | 70° | — | — |
| 1996 | 84° | 55° | 70° | — | — |
| 1995 | 96° | 62° | 79° | — | — |
| 1994 | 86° | 55° | 71° | — | — |
| 1993 | 77° | 50° | 64° | — | — |
| 1992 | 91° | 55° | 73° | — | — |
| 1991 | 92° | 57° | 74° | — | — |
| 1990 | 86° | 56° | 71° | — | — |
| 1989coldest | 67° | 50° | 58° | 1.68" | — |
| 1988 | 87° | 53° | 70° | — | — |
| 1987 | 84° | 53° | 69° | — | — |
| 1986 | 73° | 52° | 62° | — | — |
| 1985 | 81° | 50° | 65° | — | — |
| 1984warmest | 100° | 69° | 85° | 0.1" | — |
| 1983 | 88° | 53° | 70° | — | — |
| 1982 | 70° | 55° | 62° | 0.28" | — |
| 1981 | 87° | 57° | 72° | — | — |
| 1980 | 77° | 51° | 64° | — | — |
| 1979 | 87° | 52° | 69° | — | — |
| 1978 | 76° | 56° | 66° | — | — |
| 1977 | 78° | 51° | 65° | 0.2" | — |
| 1976 | 87° | 51° | 69° | — | — |
| 1975 | 84° | 54° | 69° | — | — |
| 1974 | 87° | 54° | 70° | — | — |
| 1973 | 77° | 56° | 66° | — | — |
| 1972 | 78° | 56° | 67° | — | — |
| 1971 | 92° | 53° | 72° | — | — |
55 years of data from ANTIOCH FIBREBRD MILLS