Weather on December 27
San Mateo, CA
55 Years of Data
Avg High
55°F
Avg Low
43°F
Warmest
2024
59°F avg
Coldest
1971
39°F avg
About This Date
December 27th in San Mateo, CA typically brings cool winter weather, with average highs around 55°F and lows near 43°F. Over 55 years of records, the warmest December 27th was in 2024 (59°F average), while the coldest was 1971 (39°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 44% of December 27th dates historically, with the wettest December 27th recording 5.69" of rain. The last decade has been 1.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.2°F warmer on this date compared to 20-30 years ago.
Planning for December 27th in San Mateo, CA? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Warming Trend
1.0°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 55° | 46° | 51° | — | — |
| 2024warmest | 62° | 55° | 59° | 0.53" | — |
| 2023 | 61° | 53° | 57° | 0.53" | — |
| 2022 | 62° | 50° | 56° | 3.45" | — |
| 2021 | 52° | 45° | 48° | 0.91" | — |
| 2020 | 57° | 46° | 52° | — | — |
| 2019 | 59° | 39° | 49° | — | — |
| 2018 | 59° | 47° | 53° | — | — |
| 2017 | 56° | 43° | 49° | — | — |
| 2016 | 53° | 39° | 46° | — | — |
| 2015 | 48° | 34° | 41° | 0.03" | — |
| 2014 | 56° | 42° | 49° | — | — |
| 2013 | 57° | 43° | 50° | — | — |
| 2012 | 54° | 46° | 50° | — | — |
| 2011 | 57° | 45° | 51° | — | — |
| 2010 | 54° | 45° | 49° | — | — |
| 2009 | 54° | 46° | 50° | 0.08" | — |
| 2008 | 51° | 39° | 45° | — | — |
| 2007 | 56° | 38° | 47° | 0.41" | — |
| 2006 | 55° | 46° | 51° | 0.1" | — |
| 2005 | 60° | 54° | 57° | 0.05" | — |
| 2004 | 54° | 47° | 50° | 5.69" | — |
| 2003 | 50° | 38° | 44° | — | — |
| 2002 | 60° | 53° | 57° | 0.05" | — |
| 2001 | 59° | 48° | 54° | 0.15" | — |
| 2000 | 57° | 42° | 50° | — | — |
| 1999 | 62° | 40° | 51° | — | — |
| 1998 | 48° | 41° | 45° | — | — |
| 1997 | 53° | 36° | 44° | — | — |
| 1996 | 60° | 52° | 56° | 0.61" | — |
| 1995 | 61° | 45° | 53° | 0.03" | — |
| 1994 | 54° | 46° | 50° | 0.41" | — |
| 1993 | 57° | 46° | 52° | — | — |
| 1992 | 52° | 39° | 45° | — | — |
| 1991 | 61° | 50° | 55° | 1.63" | — |
| 1990 | 51° | 35° | 43° | — | — |
| 1989 | 53° | 38° | 45° | — | — |
| 1988 | 50° | 34° | 42° | 0.71" | — |
| 1987 | 51° | 45° | 48° | 1.14" | — |
| 1986 | 52° | 42° | 47° | — | — |
| 1985 | 47° | 38° | 42° | — | — |
| 1984 | 52° | 35° | 43° | — | — |
| 1983 | 59° | 50° | 55° | — | — |
| 1982 | 55° | 40° | 47° | — | — |
| 1981 | 55° | 46° | 51° | 0.08" | — |
| 1980 | 54° | 47° | 50° | — | — |
| 1979 | 50° | 39° | 45° | — | — |
| 1978 | 49° | 39° | 44° | — | — |
| 1977 | 57° | 50° | 54° | 1.27" | — |
| 1976 | 56° | 32° | 44° | — | — |
| 1975 | 56° | 45° | 50° | — | — |
| 1974 | 54° | 32° | 43° | 1.5" | — |
| 1973 | 58° | 51° | 54° | 3.02" | — |
| 1972 | 57° | 43° | 50° | 0.58" | — |
| 1971coldest | 48° | 31° | 39° | 0.64" | — |
55 years of data from BURLINGAME