Weather on December 17
Hayward, CA
55 Years of Data
Avg High
59°F
Avg Low
43°F
Warmest
1996
61°F avg
Coldest
1993
41°F avg
About This Date
December 17th in Hayward, CA typically brings cool winter weather, with average highs around 59°F and lows near 43°F. Over 53 years of records, the warmest December 17th was in 1996 (61°F average), while the coldest was 1993 (41°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 34% of December 17th dates historically, with the wettest December 17th recording 1.96" of rain. The last decade has been 1.1°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.1°F cooler on this date compared to 20-30 years ago.
Planning for December 17th in Hayward, CA? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 66° | 49° | 57° | 0.53" | — |
| 2024 | 57° | 47° | 52° | — | — |
| 2023 | 61° | 47° | 54° | 0.76" | — |
| 2022 | 54° | 36° | 45° | — | — |
| 2021 | 57° | 40° | 48° | — | — |
| 2020 | 59° | 46° | 53° | 1.47" | — |
| 2019 | 59° | 40° | 49° | — | — |
| 2018 | 62° | 49° | 55° | 0.03" | — |
| 2017 | 68° | 46° | 57° | — | — |
| 2016 | 52° | 34° | 43° | — | — |
| 2015 | 59° | 39° | 49° | — | — |
| 2014 | 60° | 49° | 54° | 0.25" | — |
| 2013 | 59° | 49° | 54° | — | — |
| 2012 | 58° | 45° | 51° | 0.3" | — |
| 2011 | 58° | 38° | 48° | — | — |
| 2010 | 57° | 47° | 52° | 0.81" | — |
| 2009 | 60° | 47° | 53° | — | — |
| 2008 | 51° | 34° | 42° | — | — |
| 2007 | 56° | 48° | 52° | 0.51" | — |
| 2006 | 54° | 35° | 44° | — | — |
| 2005 | 52° | 42° | 47° | 0.53" | — |
| 2004 | 61° | 41° | 51° | — | — |
| 2003 | 62° | 40° | 51° | — | — |
| 2002 | 54° | 45° | 49° | 0.81" | — |
| 2001 | 57° | 49° | 53° | 1.04" | — |
| 2000 | 66° | 43° | 54° | — | — |
| 1999 | 63° | 40° | 51° | — | — |
| 1998 | 66° | 46° | 56° | — | — |
| 1997 | 58° | 44° | 51° | — | — |
| 1996warmest | 62° | 60° | 61° | — | — |
| 1995 | 63° | 56° | 59° | — | — |
| 1994 | 60° | 55° | 58° | — | — |
| 1993coldest | 44° | 38° | 41° | — | — |
| 1992 | 47° | 37° | 42° | — | — |
| 1989 | 64° | 39° | 52° | — | — |
| 1988 | 59° | 44° | 52° | — | — |
| 1987 | 51° | 39° | 45° | 0.61" | — |
| 1986 | 66° | 44° | 55° | — | — |
| 1985 | 61° | 40° | 50° | — | — |
| 1984 | 54° | 35° | 44° | — | — |
| 1983 | 56° | 52° | 54° | 0.36" | — |
| 1982 | 66° | 52° | 59° | 0.58" | — |
| 1981 | 63° | 46° | 54° | — | — |
| 1980 | 72° | 46° | 59° | — | — |
| 1979 | 66° | 45° | 55° | — | — |
| 1978 | 61° | 43° | 52° | 0.36" | — |
| 1977 | 59° | 44° | 52° | 1.96" | — |
| 1976 | 70° | 48° | 59° | — | — |
| 1975 | 55° | 35° | 45° | — | — |
| 1974 | 60° | 42° | 51° | — | — |
| 1973 | 61° | 39° | 50° | 0.56" | — |
| 1972 | 50° | 33° | 42° | 1.35" | — |
| 1971 | 51° | 33° | 42° | — | — |
53 years of data from HAYWARD AIR TERMINAL