Weather on December 21
Daly City, CA
55 Years of Data
About This Date
December 21st in Daly City, CA typically brings cool winter weather, with average highs around 57°F and lows near 44°F. Over 55 years of records, the warmest December 21st was in 1999 (61°F average), while the coldest was 1990 (35°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 45% of December 21st dates historically, with the wettest December 21st recording 4.45" 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 21st in Daly City, CA? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 60° | 57° | 59° | 0.56" | — |
| 2024 | 59° | 51° | 55° | 0.23" | — |
| 2023 | 60° | 51° | 56° | 0.03" | — |
| 2022 | 56° | 45° | 50° | — | — |
| 2021 | 53° | 44° | 49° | 0.41" | — |
| 2020 | 72° | 32° | 52° | — | — |
| 2019 | 59° | 50° | 55° | — | — |
| 2018 | 63° | 36° | 49° | 0.2" | — |
| 2017 | 58° | 41° | 49° | — | — |
| 2016 | 65° | 46° | 55° | — | — |
| 2015 | 59° | 41° | 50° | 2.41" | — |
| 2014 | 62° | 51° | 57° | 0.03" | — |
| 2013 | 56° | 46° | 51° | — | — |
| 2012 | 59° | 51° | 55° | 0.61" | — |
| 2011 | 61° | 40° | 50° | — | — |
| 2010 | 57° | 25° | 41° | 0.58" | — |
| 2009 | 55° | 52° | 53° | 0.23" | — |
| 2008 | 33° | 53° | 43° | 0.79" | — |
| 2007 | 54° | 43° | 48° | — | — |
| 2006 | 54° | 45° | 49° | 1.85" | — |
| 2005 | 65° | 51° | 58° | 2.31" | — |
| 2004 | 57° | 43° | 50° | — | — |
| 2003 | 60° | 48° | 54° | — | — |
| 2002 | 58° | 48° | 53° | 0.64" | — |
| 2001 | 57° | 46° | 52° | 0.05" | — |
| 2000 | 57° | 49° | 53° | 0.08" | — |
| 1999warmest | 70° | 53° | 61° | — | — |
| 1998 | 44° | 32° | 38° | — | — |
| 1997 | 56° | 45° | 50° | — | — |
| 1996 | 55° | 50° | 53° | 4.45" | — |
| 1995 | 51° | 44° | 48° | — | — |
| 1994 | 55° | 43° | 49° | — | — |
| 1993 | 51° | 37° | 44° | — | — |
| 1992 | 55° | 45° | 50° | — | — |
| 1991 | 54° | 41° | 47° | — | — |
| 1990coldest | 42° | 29° | 35° | — | — |
| 1989 | 64° | 38° | 51° | — | — |
| 1988 | 53° | 40° | 46° | 0.25" | — |
| 1987 | 54° | 46° | 50° | 0.13" | — |
| 1986 | 55° | 42° | 49° | — | — |
| 1985 | 62° | 38° | 50° | — | — |
| 1984 | 52° | 39° | 45° | — | — |
| 1983 | 50° | 44° | 47° | 0.05" | — |
| 1982 | 58° | 52° | 55° | — | — |
| 1981 | 62° | 52° | 57° | — | — |
| 1980 | 58° | 49° | 53° | 1.65" | — |
| 1979 | 58° | 52° | 55° | — | — |
| 1978 | 54° | 36° | 45° | — | — |
| 1977 | 63° | 49° | 56° | 0.64" | — |
| 1976 | 58° | 42° | 50° | — | — |
| 1975 | — | 40° | — | 0.86" | — |
| 1974 | 55° | 41° | 48° | — | — |
| 1973 | 61° | 50° | 55° | 1.24" | — |
| 1972 | 57° | 51° | 54° | — | — |
| 1971 | 51° | 41° | 46° | 0.43" | — |