Weather on June 21
Hayward, CA
55 Years of Data
About This Date
June 21st in Hayward, CA typically brings pleasant summer weather, with average highs around 74°F and lows near 54°F. Over 52 years of records, the warmest June 21st was in 2022 (79°F average), while the coldest was 1996 (54°F) — a 25°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 4.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.3°F warmer on this date compared to 20-30 years ago.
Planning for June 21st in Hayward, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 71° | 51° | 61° | — | — |
| 2024 | 75° | 56° | 65° | — | — |
| 2023 | 68° | 51° | 60° | — | — |
| 2022warmest | 98° | 61° | 79° | — | — |
| 2021 | 73° | 58° | 65° | — | — |
| 2020 | 71° | 59° | 65° | — | — |
| 2019 | 74° | 55° | 64° | — | — |
| 2018 | 73° | 55° | 64° | — | — |
| 2017 | 84° | 59° | 72° | — | — |
| 2016 | 84° | 58° | 71° | — | — |
| 2015 | 68° | 57° | 63° | — | — |
| 2014 | 62° | 50° | 56° | — | — |
| 2013 | 74° | 54° | 64° | — | — |
| 2012 | 60° | 54° | 57° | — | — |
| 2011 | 93° | 59° | 76° | — | — |
| 2010 | 76° | 54° | 65° | — | — |
| 2009 | 70° | 53° | 61° | — | — |
| 2008 | 92° | 59° | 75° | — | — |
| 2007 | 71° | 54° | 62° | — | — |
| 2006 | 91° | 60° | 76° | — | — |
| 2005 | 70° | 58° | 64° | — | — |
| 2004 | 66° | 55° | 61° | — | — |
| 2003 | 67° | 55° | 61° | — | — |
| 2002 | 60° | 53° | 57° | — | — |
| 2001 | 89° | 60° | 75° | — | — |
| 2000 | 82° | 57° | 70° | — | — |
| 1999 | 65° | 55° | 60° | — | — |
| 1998 | 66° | 53° | 60° | — | — |
| 1997 | 71° | 50° | 61° | — | — |
| 1996coldest | 61° | 48° | 54° | — | — |
| 1995 | 79° | 61° | 70° | — | — |
| 1994 | 69° | 50° | 60° | — | — |
| 1993 | 66° | 51° | 59° | — | — |
| 1989 | 87° | 51° | 69° | — | — |
| 1988 | 68° | 55° | 62° | — | — |
| 1987 | 69° | 54° | 61° | — | — |
| 1986 | 76° | 54° | 65° | — | — |
| 1985 | 72° | 56° | 64° | — | — |
| 1984 | 70° | 52° | 61° | — | — |
| 1983 | 74° | 50° | 62° | — | — |
| 1982 | 64° | 54° | 59° | — | — |
| 1981 | 90° | 64° | 77° | — | — |
| 1980 | 65° | 52° | 58° | — | — |
| 1979 | 69° | 52° | 60° | — | — |
| 1978 | 64° | 52° | 58° | — | — |
| 1977 | 78° | 49° | 63° | — | — |
| 1976 | 64° | 48° | 56° | — | — |
| 1975 | 70° | 47° | 58° | — | — |
| 1974 | 78° | 50° | 64° | — | — |
| 1973 | 100° | 56° | 78° | — | — |
| 1972 | 72° | 51° | 61° | — | — |
| 1971 | 78° | 52° | 65° | — | — |
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.