Weather on September 9
Hayward, CA
55 Years of Data
Avg High
76°F
Avg Low
56°F
Warmest
1984
84°F avg
Coldest
1975
56°F avg
About This Date
September 9th in Hayward, CA typically brings pleasant fall weather, with average highs around 76°F and lows near 56°F. Over 53 years of records, the warmest September 9th was in 1984 (84°F average), while the coldest was 1975 (56°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 6% of September 9th dates historically. The last decade has been 1.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.8°F warmer on this date compared to 20-30 years ago.
Planning for September 9th in Hayward, CA? Great weather for outdoor activities.
Warming Trend
0.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 75° | 64° | 70° | 0.05" | — |
| 2024 | 75° | 58° | 66° | — | — |
| 2023 | 80° | 56° | 68° | — | — |
| 2022 | 83° | 61° | 72° | — | — |
| 2021 | 73° | 60° | 67° | — | — |
| 2020 | 66° | 61° | 63° | — | — |
| 2019 | 74° | 58° | 66° | — | — |
| 2018 | 78° | 54° | 66° | — | — |
| 2017 | 78° | 63° | 70° | — | — |
| 2016 | 73° | 57° | 65° | — | — |
| 2015 | 94° | 63° | 78° | — | — |
| 2014 | 76° | 61° | 68° | — | — |
| 2013 | 84° | 56° | 70° | — | — |
| 2012 | 69° | 54° | 61° | — | — |
| 2011 | 75° | 56° | 65° | — | — |
| 2010 | 72° | 56° | 64° | — | — |
| 2009 | 75° | 56° | 65° | — | — |
| 2008 | 69° | 59° | 64° | — | — |
| 2007 | 70° | 60° | 65° | — | — |
| 2006 | 66° | 56° | 61° | — | — |
| 2005 | 65° | 57° | 61° | — | — |
| 2004 | 82° | 61° | 71° | — | — |
| 2003 | 69° | 59° | 64° | — | — |
| 2002 | 87° | 56° | 71° | — | — |
| 2001 | 70° | 58° | 64° | — | — |
| 2000 | 75° | 55° | 65° | — | — |
| 1999 | 66° | 60° | 63° | — | — |
| 1998 | 60° | 52° | 56° | — | — |
| 1997 | 75° | 57° | 66° | — | — |
| 1996 | 88° | 60° | 74° | — | — |
| 1995 | 66° | 55° | 61° | — | — |
| 1994 | 70° | 54° | 62° | — | — |
| 1993 | 77° | 55° | 66° | — | — |
| 1992 | 71° | 54° | 62° | — | — |
| 1989 | 70° | 52° | 61° | — | — |
| 1988 | 68° | 51° | 60° | — | — |
| 1987 | 90° | 54° | 72° | — | — |
| 1986 | 63° | 53° | 58° | — | — |
| 1985 | 67° | 55° | 61° | 0.46" | — |
| 1984warmest | 100° | 68° | 84° | — | — |
| 1983 | 72° | 50° | 61° | — | — |
| 1982 | 81° | 53° | 67° | — | — |
| 1981 | 77° | 54° | 65° | — | — |
| 1980 | 71° | 56° | 63° | — | — |
| 1979 | 80° | 54° | 67° | — | — |
| 1978 | 76° | 52° | 64° | — | — |
| 1977 | 86° | 50° | 68° | — | — |
| 1976 | 95° | 62° | 79° | — | — |
| 1975coldest | 60° | 51° | 56° | 0.05" | — |
| 1974 | 73° | 55° | 64° | — | — |
| 1973 | 91° | 51° | 71° | — | — |
| 1972 | 70° | 53° | 61° | — | — |
| 1971 | 87° | 51° | 69° | — | — |
53 years of data from HAYWARD AIR TERMINAL