Weather on August 31
Hayward, CA
55 Years of Data
About This Date
August 31st in Hayward, CA typically brings pleasant summer weather, with average highs around 76°F and lows near 56°F. Over 53 years of records, the warmest August 31st was in 2005 (75°F average), while the coldest was 1973 (59°F) — a 16°F range across recorded history. Rain or other precipitation has occurred on about 2% of August 31st dates historically. The last decade has been 1.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.6°F warmer on this date compared to 20-30 years ago.
Planning for August 31st in Hayward, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 88° | 61° | 74° | — | — |
| 2024 | 75° | 62° | 69° | — | — |
| 2023 | 75° | 60° | 68° | — | — |
| 2022 | 75° | 59° | 67° | — | — |
| 2021 | 74° | 55° | 64° | — | — |
| 2020 | 77° | 58° | 67° | — | — |
| 2019 | 86° | 59° | 73° | — | — |
| 2018 | 75° | 59° | 67° | — | — |
| 2017 | 91° | 57° | 74° | — | — |
| 2016 | 71° | 60° | 66° | — | — |
| 2015 | 79° | 59° | 69° | — | — |
| 2014 | 79° | 63° | 71° | — | — |
| 2013 | 72° | 57° | 64° | — | — |
| 2012 | 63° | 57° | 60° | — | — |
| 2011 | 73° | 57° | 65° | — | — |
| 2010 | 81° | 59° | 70° | — | — |
| 2009 | 71° | 57° | 64° | — | — |
| 2008 | 72° | 57° | 64° | — | — |
| 2007 | 80° | 61° | 70° | — | — |
| 2006 | 85° | 58° | 71° | — | — |
| 2005warmest | 90° | 60° | 75° | — | — |
| 2004 | 75° | 61° | 68° | — | — |
| 2003 | 77° | 57° | 67° | — | — |
| 2002 | 78° | 57° | 68° | — | — |
| 2001 | 76° | 58° | 67° | — | — |
| 2000 | 70° | 61° | 65° | — | — |
| 1999 | 72° | 55° | 63° | — | — |
| 1998 | 90° | 50° | 70° | — | — |
| 1997 | 73° | 58° | 65° | — | — |
| 1996 | 76° | 54° | 65° | — | — |
| 1995 | 72° | 51° | 61° | — | — |
| 1994 | 70° | 54° | 62° | — | — |
| 1993 | 73° | 56° | 64° | — | — |
| 1992 | 68° | 52° | 60° | — | — |
| 1989 | 72° | 51° | 61° | — | — |
| 1988 | 79° | 53° | 66° | — | — |
| 1987 | 75° | 56° | 65° | — | — |
| 1986 | 79° | 56° | 67° | — | — |
| 1985 | 84° | 54° | 69° | — | — |
| 1984 | 73° | 52° | 62° | 0.23" | — |
| 1983 | 76° | 58° | 67° | — | — |
| 1982 | 79° | 52° | 65° | — | — |
| 1981 | 77° | 55° | 66° | — | — |
| 1980 | 74° | 54° | 64° | — | — |
| 1979 | 75° | 58° | 66° | — | — |
| 1978 | 70° | 56° | 63° | — | — |
| 1977 | 84° | 54° | 69° | — | — |
| 1976 | 88° | 52° | 70° | — | — |
| 1975 | 76° | 50° | 63° | — | — |
| 1974 | 62° | 55° | 59° | — | — |
| 1973coldest | 70° | 49° | 59° | — | — |
| 1972 | 85° | 52° | 68° | — | — |
| 1971 | 74° | 54° | 64° | — | — |
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.