Weather on December 18
Hayward, CA
55 Years of Data
Avg High
59°F
Avg Low
43°F
Warmest
1994
63°F avg
Coldest
1992
43°F avg
About This Date
December 18th 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 18th was in 1994 (63°F average), while the coldest was 1992 (43°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 28% of December 18th dates historically, with the wettest December 18th recording 2.06" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for December 18th in Hayward, CA? Bring layers as temperatures can vary throughout the day.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 58° | 50° | 54° | — | — |
| 2024 | 61° | 42° | 51° | — | — |
| 2023 | 69° | 52° | 60° | 2.06" | — |
| 2022 | 54° | 36° | 45° | — | — |
| 2021 | 53° | 39° | 46° | — | — |
| 2020 | 61° | 41° | 51° | — | — |
| 2019 | 58° | 50° | 54° | 0.53" | — |
| 2018 | 65° | 47° | 56° | — | — |
| 2017 | 59° | 42° | 51° | — | — |
| 2016 | 55° | 32° | 44° | — | — |
| 2015 | 59° | 42° | 51° | 0.41" | — |
| 2014 | 64° | 53° | 59° | — | — |
| 2013 | 59° | 44° | 52° | — | — |
| 2012 | 54° | 39° | 46° | — | — |
| 2011 | 54° | 36° | 45° | — | — |
| 2010 | 61° | 54° | 57° | 0.46" | — |
| 2009 | 65° | 47° | 56° | — | — |
| 2008 | 54° | 36° | 45° | 0.08" | — |
| 2007 | 56° | 46° | 51° | 1.32" | — |
| 2006 | 57° | 33° | 45° | — | — |
| 2005 | 63° | 51° | 57° | 1.88" | — |
| 2004 | 62° | 42° | 52° | — | — |
| 2003 | 64° | 42° | 53° | — | — |
| 2002 | 56° | 41° | 48° | — | — |
| 2001 | 55° | 43° | 49° | — | — |
| 2000 | 60° | 42° | 51° | — | — |
| 1999 | 57° | 42° | 50° | — | — |
| 1998 | 63° | 41° | 52° | — | — |
| 1997 | 57° | 44° | 51° | — | — |
| 1996 | 54° | 54° | 54° | — | — |
| 1995 | 57° | 55° | 56° | — | — |
| 1994warmest | 69° | 57° | 63° | — | — |
| 1993 | 48° | 41° | 45° | — | — |
| 1992coldest | 51° | 35° | 43° | — | — |
| 1989 | 55° | 40° | 47° | — | — |
| 1988 | 66° | 42° | 54° | — | — |
| 1987 | 58° | 38° | 48° | 0.03" | — |
| 1986 | 66° | 44° | 55° | 0.33" | — |
| 1985 | 62° | 38° | 50° | — | — |
| 1984 | 51° | 40° | 45° | — | — |
| 1983 | 62° | 47° | 54° | 0.03" | — |
| 1982 | 60° | 42° | 51° | — | — |
| 1981 | 65° | 48° | 56° | 0.1" | — |
| 1980 | 69° | 50° | 60° | — | — |
| 1979 | 67° | 43° | 55° | — | — |
| 1978 | 50° | 43° | 46° | 0.89" | — |
| 1977 | 56° | 40° | 48° | 1.83" | — |
| 1976 | 69° | 49° | 59° | — | — |
| 1975 | 62° | 35° | 49° | — | — |
| 1974 | 60° | 38° | 49° | — | — |
| 1973 | 59° | 37° | 48° | 0.08" | — |
| 1972 | 54° | 39° | 46° | 1.75" | — |
| 1971 | 56° | 32° | 44° | — | — |
53 years of data from HAYWARD AIR TERMINAL