Weather on September 29
Antioch, CA
55 Years of Data
Avg High
83°F
Avg Low
56°F
Warmest
2018
88°F avg
Coldest
1974
59°F avg
About This Date
September 29th in Antioch, CA typically brings warm fall weather, with average highs around 83°F and lows near 56°F — a 27°F daily swing. Over 55 years of records, the warmest September 29th was in 2018 (88°F average), while the coldest was 1974 (59°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 5% of September 29th dates historically, with the wettest September 29th recording 2.16" of rain. The last decade has been 1.3°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.3°F cooler on this date compared to 20-30 years ago.
Planning for September 29th in Antioch, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 66° | 57° | 62° | — | — |
| 2024 | 82° | 62° | 72° | — | — |
| 2023 | 68° | 55° | 62° | — | — |
| 2022 | 81° | 59° | 70° | — | — |
| 2021 | 77° | 54° | 65° | — | — |
| 2020 | 95° | 64° | 80° | — | — |
| 2019 | 70° | 50° | 60° | — | — |
| 2018warmest | 124° | 53° | 88° | — | — |
| 2017 | 76° | 61° | 68° | — | — |
| 2016 | 80° | 52° | 66° | — | — |
| 2015 | 78° | 59° | 69° | — | — |
| 2014 | 81° | 56° | 68° | — | — |
| 2013 | 78° | 60° | 69° | — | — |
| 2012 | 88° | 55° | 71° | — | — |
| 2011 | 92° | 60° | 76° | — | — |
| 2010 | 99° | 62° | 80° | — | — |
| 2009 | 73° | 55° | 64° | — | — |
| 2008 | 81° | 58° | 69° | — | — |
| 2007 | 73° | 57° | 65° | — | — |
| 2006 | 76° | 51° | 63° | — | — |
| 2005 | 90° | 59° | 74° | — | — |
| 2004 | 76° | 54° | 65° | — | — |
| 2003 | 82° | 57° | 70° | — | — |
| 2002 | 78° | 51° | 65° | — | — |
| 2001 | 90° | 59° | 74° | — | — |
| 2000 | 90° | 54° | 72° | — | — |
| 1999 | 91° | 66° | 79° | — | — |
| 1998 | 72° | 55° | 63° | — | — |
| 1997 | 90° | 63° | 76° | — | — |
| 1996 | 85° | 52° | 68° | — | — |
| 1995 | 82° | 55° | 69° | — | — |
| 1994 | 77° | 58° | 67° | 0.03" | — |
| 1993 | 93° | 60° | 77° | — | — |
| 1992 | 95° | 61° | 78° | — | — |
| 1991 | 89° | 58° | 73° | — | — |
| 1990 | 89° | 58° | 73° | — | — |
| 1989 | 74° | 60° | 67° | 1.19" | — |
| 1988 | 89° | 59° | 74° | — | — |
| 1987 | 92° | 59° | 75° | — | — |
| 1986 | 76° | 55° | 65° | — | — |
| 1985 | 79° | 52° | 65° | — | — |
| 1984 | 93° | 62° | 78° | — | — |
| 1983 | 82° | 54° | 68° | — | — |
| 1982 | 79° | 49° | 64° | — | — |
| 1981 | 78° | 55° | 67° | — | — |
| 1980 | 86° | 51° | 69° | — | — |
| 1979 | 90° | 55° | 72° | — | — |
| 1978 | 91° | 54° | 72° | — | — |
| 1977 | 82° | 57° | 70° | — | — |
| 1976 | 70° | 58° | 64° | 2.16" | — |
| 1975 | 82° | 46° | 64° | — | — |
| 1974coldest | 73° | 45° | 59° | — | — |
| 1973 | 93° | 55° | 74° | — | — |
| 1972 | 80° | 57° | 69° | — | — |
| 1971 | 71° | 51° | 61° | — | — |
55 years of data from ANTIOCH FIBREBRD MILLS