Weather on December 28
San Mateo, CA
55 Years of Data
Avg High
56°F
Avg Low
44°F
Warmest
2024
60°F avg
Coldest
1988
41°F avg
About This Date
December 28th in San Mateo, CA typically brings cool winter weather, with average highs around 56°F and lows near 44°F. Over 55 years of records, the warmest December 28th was in 2024 (60°F average), while the coldest was 1988 (41°F) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 36% of December 28th dates historically, with the wettest December 28th recording 3.71" of rain. The last decade has been 1.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.3°F warmer on this date compared to 20-30 years ago.
Planning for December 28th in San Mateo, CA? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 57° | 43° | 50° | — | — |
| 2024warmest | 65° | 56° | 60° | 0.03" | — |
| 2023 | 63° | 56° | 59° | 0.03" | — |
| 2022 | 57° | 45° | 51° | — | — |
| 2021 | 49° | 44° | 46° | — | — |
| 2020 | 56° | 47° | 51° | 0.05" | — |
| 2019 | 59° | 40° | 49° | — | — |
| 2018 | 58° | 44° | 51° | — | — |
| 2017 | 57° | 43° | 50° | — | — |
| 2016 | 58° | 40° | 49° | — | — |
| 2015 | 48° | 41° | 45° | 0.28" | — |
| 2014 | 57° | 43° | 50° | — | — |
| 2013 | 63° | 40° | 51° | — | — |
| 2012 | 50° | 41° | 46° | 0.43" | — |
| 2011 | 59° | 43° | 51° | — | — |
| 2010 | 57° | 49° | 53° | 2.29" | — |
| 2009 | 52° | 44° | 48° | 0.03" | — |
| 2008 | 56° | 45° | 50° | — | — |
| 2007 | 46° | 42° | 44° | 0.18" | — |
| 2006 | 57° | 43° | 50° | — | — |
| 2005 | 61° | 51° | 56° | 1.65" | — |
| 2004 | 52° | 47° | 49° | 0.48" | — |
| 2003 | 50° | 38° | 44° | — | — |
| 2002 | 60° | 48° | 54° | 2.54" | — |
| 2001 | 56° | 51° | 53° | 3.25" | — |
| 2000 | 59° | 41° | 50° | — | — |
| 1999 | 58° | 41° | 49° | — | — |
| 1998 | 48° | 41° | 45° | — | — |
| 1997 | 59° | 38° | 48° | — | — |
| 1996 | 59° | 52° | 55° | 0.03" | — |
| 1995 | 56° | 45° | 50° | — | — |
| 1994 | 53° | 42° | 48° | — | — |
| 1993 | 56° | 46° | 51° | — | — |
| 1992 | 55° | 49° | 52° | 3.53" | — |
| 1991 | 59° | 49° | 54° | 3.71" | — |
| 1990 | 54° | 40° | 47° | — | — |
| 1989 | 55° | 43° | 49° | 0.03" | — |
| 1988coldest | 47° | 36° | 41° | — | — |
| 1987 | 54° | 43° | 48° | 0.69" | — |
| 1986 | 50° | 41° | 46° | — | — |
| 1985 | 45° | 40° | 42° | — | — |
| 1984 | 52° | 39° | 45° | — | — |
| 1983 | 58° | 50° | 54° | — | — |
| 1982 | 55° | 42° | 49° | — | — |
| 1981 | 53° | 44° | 49° | — | — |
| 1980 | 63° | 45° | 54° | — | — |
| 1979 | 50° | 38° | 44° | — | — |
| 1978 | 55° | 37° | 46° | — | — |
| 1977 | 58° | 52° | 55° | 0.33" | — |
| 1976 | 55° | 31° | 43° | — | — |
| 1975 | 59° | — | — | — | — |
| 1974 | 55° | 40° | 47° | 0.76" | — |
| 1973 | 64° | 54° | 59° | 0.28" | — |
| 1972 | 55° | 44° | 50° | — | — |
| 1971 | 53° | 35° | 44° | — | — |
55 years of data from BURLINGAME