Weather on September 1
Hayward, CA
55 Years of Data
About This Date
September 1st 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 1st was in 2017 (86°F average), while the coldest was 1973 (53°F) — a 33°F range across recorded history. Rain or other precipitation has occurred on about 2% of September 1st dates historically, with the wettest September 1st recording 0.79" of rain. 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 1st in Hayward, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 84° | 59° | 72° | — | — |
| 2024 | 76° | 62° | 69° | — | — |
| 2023 | 73° | 63° | 68° | — | — |
| 2022 | 81° | 56° | 68° | — | — |
| 2021 | 71° | 57° | 64° | — | — |
| 2020 | 74° | 61° | 67° | — | — |
| 2019 | 80° | 61° | 70° | — | — |
| 2018 | 72° | 58° | 65° | — | — |
| 2017warmest | 103° | 69° | 86° | — | — |
| 2016 | 68° | 60° | 64° | — | — |
| 2015 | 75° | 58° | 66° | — | — |
| 2014 | 90° | 62° | 76° | — | — |
| 2013 | 76° | 57° | 66° | — | — |
| 2012 | 69° | 55° | 62° | — | — |
| 2011 | 76° | 55° | 65° | — | — |
| 2010 | 91° | 59° | 75° | — | — |
| 2009 | 79° | 60° | 69° | — | — |
| 2008 | 88° | 54° | 71° | — | — |
| 2007 | 85° | 60° | 72° | — | — |
| 2006 | 74° | 57° | 65° | — | — |
| 2005 | 75° | 58° | 66° | — | — |
| 2004 | 73° | 60° | 67° | — | — |
| 2003 | 82° | 57° | 70° | — | — |
| 2002 | 93° | 60° | 77° | — | — |
| 2001 | 75° | 59° | 67° | — | — |
| 2000 | 63° | 58° | 60° | 0.79" | — |
| 1999 | 72° | 53° | 62° | — | — |
| 1998 | 87° | 65° | 76° | — | — |
| 1997 | 76° | 58° | 67° | — | — |
| 1996 | 75° | 54° | 64° | — | — |
| 1995 | 67° | 53° | 60° | — | — |
| 1994 | 65° | 53° | 59° | — | — |
| 1993 | 81° | 56° | 68° | — | — |
| 1992 | 70° | 55° | 62° | — | — |
| 1989 | 82° | 54° | 68° | — | — |
| 1988 | 74° | 54° | 64° | — | — |
| 1987 | 76° | 60° | 68° | — | — |
| 1986 | 80° | 54° | 67° | — | — |
| 1985 | 85° | 55° | 70° | — | — |
| 1984 | 80° | 54° | 67° | — | — |
| 1983 | 75° | 54° | 64° | — | — |
| 1982 | 84° | 53° | 69° | — | — |
| 1981 | 81° | 51° | 66° | — | — |
| 1980 | 74° | 53° | 63° | — | — |
| 1979 | 82° | 61° | 71° | — | — |
| 1978 | 78° | 56° | 67° | — | — |
| 1977 | 73° | 54° | 63° | — | — |
| 1976 | 88° | 53° | 70° | — | — |
| 1975 | 72° | 51° | 61° | — | — |
| 1974 | 69° | 54° | 61° | — | — |
| 1973coldest | 62° | 45° | 53° | — | — |
| 1972 | 80° | 52° | 66° | — | — |
| 1971 | 73° | 54° | 63° | — | — |
Hayward, CA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Hayward, CA Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Hayward, CA Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Hayward, CA
Most pleasant months in Hayward, CA: August.