Weather on September 25
Hayward, CA
55 Years of Data
Avg High
77°F
Avg Low
56°F
Warmest
2019
82°F avg
Coldest
1988
58°F avg
About This Date
September 25th in Hayward, CA typically brings pleasant fall weather, with average highs around 77°F and lows near 56°F. Over 53 years of records, the warmest September 25th was in 2019 (82°F average), while the coldest was 1988 (58°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 13% of September 25th dates historically, with the wettest September 25th recording 0.94" of rain. The last decade has been 3.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.3°F warmer on this date compared to 20-30 years ago.
Planning for September 25th in Hayward, CA? Great weather for outdoor activities.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 74° | 59° | 66° | 0.08" | — |
| 2024 | 73° | 61° | 67° | — | — |
| 2023 | 76° | 55° | 65° | — | — |
| 2022 | 73° | 58° | 65° | — | — |
| 2021 | 69° | 58° | 63° | — | — |
| 2020 | 75° | 62° | 69° | — | — |
| 2019warmest | 101° | 63° | 82° | — | — |
| 2018 | 76° | 55° | 65° | — | — |
| 2017 | 83° | 54° | 68° | — | — |
| 2016 | 94° | 59° | 76° | — | — |
| 2015 | 77° | 57° | 67° | — | — |
| 2014 | 72° | 61° | 66° | 0.86" | — |
| 2013 | 66° | 52° | 59° | — | — |
| 2012 | 73° | 53° | 63° | — | — |
| 2011 | 69° | 59° | 64° | — | — |
| 2010 | 93° | 57° | 75° | — | — |
| 2009 | 80° | 55° | 68° | — | — |
| 2008 | 82° | 57° | 70° | — | — |
| 2007 | 82° | 53° | 68° | — | — |
| 2006 | 88° | 55° | 71° | — | — |
| 2005 | 79° | 50° | 64° | — | — |
| 2004 | 74° | 56° | 65° | — | — |
| 2003 | 66° | 60° | 63° | — | — |
| 2002 | 76° | 56° | 66° | — | — |
| 2001 | 75° | 58° | 66° | 0.03" | — |
| 2000 | 79° | 57° | 68° | — | — |
| 1999 | 81° | 57° | 69° | — | — |
| 1998 | 66° | 57° | 62° | — | — |
| 1997 | 79° | 60° | 69° | — | — |
| 1996 | 72° | 50° | 61° | — | — |
| 1995 | 68° | 56° | 62° | — | — |
| 1994 | 76° | 57° | 66° | — | — |
| 1993 | 89° | 66° | 78° | — | — |
| 1992 | 86° | 59° | 73° | — | — |
| 1989 | 72° | 56° | 64° | — | — |
| 1988coldest | 66° | 50° | 58° | — | — |
| 1987 | 73° | 55° | 64° | — | — |
| 1986 | 67° | 53° | 60° | 0.28" | — |
| 1985 | 89° | 53° | 71° | — | — |
| 1984 | 83° | 52° | 67° | — | — |
| 1983 | 70° | 59° | 64° | — | — |
| 1982 | 76° | 62° | 69° | 0.94" | — |
| 1981 | 65° | 54° | 59° | 0.15" | — |
| 1980 | 89° | 56° | 72° | — | — |
| 1979 | 74° | 56° | 65° | — | — |
| 1978 | 96° | 62° | 79° | — | — |
| 1977 | 71° | 52° | 61° | — | — |
| 1976 | 67° | 53° | 60° | — | — |
| 1975 | 94° | 49° | 71° | — | — |
| 1974 | 73° | 52° | 62° | — | — |
| 1973 | 69° | 48° | 59° | 0.1" | — |
| 1972 | 72° | 46° | 59° | — | — |
| 1971 | 68° | 53° | 61° | — | — |
53 years of data from HAYWARD AIR TERMINAL