Weather on December 1
Seattle, WA
55 Years of Data
Avg High
48°F
Avg Low
38°F
Warmest
2021
55°F avg
Coldest
1985
25°F avg
About This Date
December 1st in Seattle, WA typically brings chilly winter weather, with average highs around 48°F and lows near 38°F. Over 55 years of records, the warmest December 1st was in 2021 (55°F average), while the coldest was 1985 (25°F) — a 30°F range across recorded history. Precipitation has occurred on 60% of recorded December 1st dates, with snow falling 2% of the time. The last decade has been 1.9°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.9°F cooler on this date compared to 20-30 years ago.
Planning for December 1st in Seattle, WA? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 47° | 33° | 40° | 0.05" | — |
| 2024 | 51° | 32° | 42° | — | — |
| 2023 | 50° | 38° | 44° | 0.15" | — |
| 2022 | 39° | 25° | 32° | — | — |
| 2021warmest | 58° | 53° | 55° | — | — |
| 2020 | 50° | 34° | 42° | — | — |
| 2019 | 45° | 32° | 38° | 0.03" | — |
| 2018 | 47° | 38° | 42° | 0.15" | — |
| 2017 | 50° | 41° | 46° | 0.53" | — |
| 2016 | 46° | 38° | 42° | — | — |
| 2015 | 53° | 40° | 46° | 0.99" | — |
| 2014 | 41° | 25° | 33° | — | — |
| 2013 | 56° | 47° | 51° | 0.08" | — |
| 2012 | 57° | 48° | 53° | 0.71" | — |
| 2011 | 42° | 35° | 39° | — | — |
| 2010 | 49° | 38° | 43° | — | — |
| 2009 | 50° | 37° | 44° | — | — |
| 2008 | 57° | 49° | 53° | 0.25" | — |
| 2007 | 39° | 32° | 36° | 0.86" | — |
| 2006 | 42° | 33° | 38° | 0.03" | — |
| 2005 | 39° | 32° | 36° | 0.71" | — |
| 2004 | 46° | 40° | 43° | — | — |
| 2003 | 46° | 40° | 43° | 0.1" | — |
| 2002 | 53° | 34° | 43° | — | — |
| 2001 | 53° | 42° | 48° | 2.29" | — |
| 2000 | 57° | 41° | 49° | 0.13" | — |
| 1999 | 50° | 44° | 47° | 0.43" | — |
| 1998 | 48° | 41° | 45° | 2.11" | — |
| 1997 | 52° | 37° | 44° | — | — |
| 1996 | 49° | 40° | 44° | — | — |
| 1995 | 51° | 44° | 48° | 0.58" | — |
| 1994 | 45° | 38° | 41° | 0.51" | — |
| 1993 | 53° | 41° | 47° | 1.19" | — |
| 1992 | 42° | 35° | 39° | — | — |
| 1991 | 50° | 40° | 45° | — | — |
| 1990 | 46° | 38° | 42° | 0.43" | — |
| 1989 | 51° | 36° | 43° | — | — |
| 1988 | 49° | 34° | 41° | — | — |
| 1987 | 50° | 43° | 46° | 3.58" | — |
| 1986 | 51° | 36° | 43° | 0.23" | — |
| 1985coldest | 30° | 20° | 25° | 0.08" | 0.5" |
| 1984 | 46° | 33° | 40° | — | — |
| 1983 | 46° | 28° | 37° | — | — |
| 1982 | 49° | 44° | 46° | — | — |
| 1981 | 52° | 42° | 47° | 0.71" | — |
| 1980 | 44° | 40° | 42° | 0.25" | — |
| 1979 | 46° | 39° | 43° | 3.23" | — |
| 1978 | 44° | 40° | 42° | 0.28" | — |
| 1977 | 54° | 42° | 48° | 0.41" | — |
| 1976 | 41° | 33° | 37° | — | — |
| 1975 | 55° | 51° | 53° | 0.33" | — |
| 1974 | 51° | 39° | 45° | 0.05" | — |
| 1973 | 50° | 43° | 46° | 0.33" | — |
| 1972 | 51° | 42° | 47° | 0.53" | — |
| 1971 | 51° | 35° | 43° | — | — |
55 years of data from SEATTLE URBAN SITE