Weather on September 4
Hayward, CA
55 Years of Data
Avg High
77°F
Avg Low
57°F
Warmest
2008
80°F avg
Coldest
1993
59°F avg
About This Date
September 4th in Hayward, CA typically brings pleasant fall weather, with average highs around 77°F and lows near 57°F. Over 53 years of records, the warmest September 4th was in 2008 (80°F average), while the coldest was 1993 (59°F) — a 21°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 1.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.7°F warmer on this date compared to 20-30 years ago.
Planning for September 4th in Hayward, CA? Great weather for outdoor activities.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 69° | 60° | 65° | — | — |
| 2024 | 86° | 61° | 73° | — | — |
| 2023 | 75° | 62° | 69° | — | — |
| 2022 | 94° | 60° | 77° | — | — |
| 2021 | 79° | 52° | 65° | — | — |
| 2020 | 77° | 60° | 69° | — | — |
| 2019 | 77° | 60° | 69° | — | — |
| 2018 | 76° | 60° | 68° | — | — |
| 2017 | 84° | 68° | 76° | — | — |
| 2016 | 68° | 56° | 62° | — | — |
| 2015 | 69° | 53° | 61° | — | — |
| 2014 | 79° | 64° | 71° | — | — |
| 2013 | 75° | 60° | 68° | — | — |
| 2012 | 70° | 52° | 61° | — | — |
| 2011 | 69° | 58° | 63° | — | — |
| 2010 | 70° | 55° | 62° | — | — |
| 2009 | 69° | 57° | 63° | — | — |
| 2008warmest | 98° | 62° | 80° | — | — |
| 2007 | 70° | 61° | 65° | — | — |
| 2006 | 70° | 56° | 63° | — | — |
| 2005 | 67° | 57° | 62° | — | — |
| 2004 | 92° | 66° | 79° | — | — |
| 2003 | 74° | 62° | 68° | — | — |
| 2002 | 72° | 57° | 64° | — | — |
| 2001 | 74° | 57° | 65° | — | — |
| 2000 | 68° | 54° | 61° | — | — |
| 1999 | 75° | 54° | 64° | — | — |
| 1998 | 82° | 66° | 74° | — | — |
| 1997 | 90° | 65° | 77° | — | — |
| 1996 | 71° | 53° | 62° | — | — |
| 1995 | 73° | 55° | 64° | — | — |
| 1994 | 84° | 60° | 72° | — | — |
| 1993coldest | 65° | 53° | 59° | — | — |
| 1992 | 76° | 52° | 64° | — | — |
| 1989 | 84° | 51° | 68° | — | — |
| 1988 | 82° | 54° | 68° | — | — |
| 1987 | 73° | 57° | 65° | — | — |
| 1986 | 73° | 56° | 64° | — | — |
| 1985 | 73° | 52° | 62° | — | — |
| 1984 | 86° | 57° | 72° | — | — |
| 1983 | 88° | 57° | 72° | — | — |
| 1982 | 75° | 57° | 66° | — | — |
| 1981 | 73° | 54° | 63° | — | — |
| 1980 | 71° | 55° | 63° | — | — |
| 1979 | 77° | 58° | 67° | — | — |
| 1978 | 76° | 59° | 67° | — | — |
| 1977 | 86° | 58° | 72° | — | — |
| 1976 | 72° | 54° | 63° | — | — |
| 1975 | 87° | 53° | 70° | — | — |
| 1974 | 73° | 55° | 64° | — | — |
| 1973 | 75° | 47° | 61° | — | — |
| 1972 | 71° | 53° | 62° | — | — |
| 1971 | 84° | 52° | 68° | — | — |
53 years of data from HAYWARD AIR TERMINAL