Weather on December 20
Bellevue, WA
55 Years of Data
Avg High
46°F
Avg Low
37°F
Warmest
1972
52°F avg
Coldest
1990
17°F avg
About This Date
December 20th in Bellevue, WA typically brings chilly winter weather, with average highs around 46°F and lows near 37°F. Over 55 years of records, the warmest December 20th was in 1972 (52°F average), while the coldest was 1990 (17°F) — a 35°F range across recorded history. Precipitation has occurred on 69% of recorded December 20th dates, with snow falling 7% of the time (heaviest snowfall: 3"). The last decade has been 3.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.2°F warmer on this date compared to 20-30 years ago.
Planning for December 20th in Bellevue, WA? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 48° | 41° | 45° | 0.53" | — |
| 2024 | 54° | 45° | 49° | 0.08" | — |
| 2023 | 51° | 37° | 44° | 0.05" | — |
| 2022 | 38° | 29° | 34° | 1.24" | 1.2" |
| 2021 | 39° | 37° | 38° | — | — |
| 2020 | 54° | 47° | 50° | — | — |
| 2019 | 53° | 46° | 50° | 6.71" | — |
| 2018 | 56° | 39° | 47° | 0.71" | — |
| 2017 | 45° | 29° | 37° | 0.36" | — |
| 2016 | 51° | 41° | 46° | 0.1" | — |
| 2015 | 46° | 42° | 44° | 0.48" | — |
| 2014 | 56° | 44° | 50° | 1.32" | — |
| 2013 | 42° | 32° | 37° | 0.94" | 0.9" |
| 2012 | 45° | 35° | 40° | 1.35" | — |
| 2011 | 45° | 40° | 42° | — | — |
| 2010 | 45° | 37° | 41° | 0.15" | — |
| 2009 | 57° | 44° | 51° | 0.3" | — |
| 2008 | 27° | 19° | 23° | 0.79" | 3" |
| 2007 | 44° | 32° | 38° | 0.41" | — |
| 2006 | 48° | 39° | 44° | 1.09" | — |
| 2005 | 50° | 44° | 47° | 1.12" | — |
| 2004 | 46° | 34° | 40° | — | — |
| 2003 | 49° | 45° | 47° | 0.28" | — |
| 2002 | 53° | 41° | 47° | — | — |
| 2001 | 41° | 38° | 39° | 0.1" | — |
| 2000 | 44° | 32° | 38° | 0.15" | — |
| 1999 | 49° | 41° | 45° | — | — |
| 1998 | 26° | 19° | 23° | — | — |
| 1997 | 45° | 36° | 40° | 0.66" | — |
| 1996 | 44° | 39° | 42° | 0.38" | — |
| 1995 | 51° | 38° | 44° | — | — |
| 1994 | 53° | 45° | 49° | 2.59" | — |
| 1993 | 46° | 32° | 39° | — | — |
| 1992 | 45° | 39° | 42° | 0.33" | — |
| 1991 | 49° | 35° | 42° | 0.28" | — |
| 1990coldest | 21° | 12° | 17° | — | — |
| 1989 | 51° | 44° | 48° | 0.25" | — |
| 1988 | 44° | 40° | 42° | 0.81" | — |
| 1987 | 42° | 32° | 37° | 0.74" | — |
| 1986 | 47° | 34° | 40° | — | — |
| 1985 | 38° | 33° | 35° | — | — |
| 1984 | 37° | 30° | 34° | 0.1" | 0.5" |
| 1983 | 29° | 21° | 25° | — | — |
| 1982 | 45° | 37° | 41° | 1.8" | — |
| 1981 | 48° | 38° | 43° | — | — |
| 1980 | 48° | 39° | 44° | 1.55" | — |
| 1979 | 53° | 46° | 50° | 0.58" | — |
| 1978 | 42° | 35° | 39° | 0.03" | — |
| 1977 | 52° | 36° | 44° | — | — |
| 1976 | 53° | 35° | 44° | — | — |
| 1975 | 43° | 30° | 36° | — | — |
| 1974 | 50° | 44° | 47° | 0.13" | — |
| 1973 | 54° | 42° | 48° | 0.94" | — |
| 1972warmest | 54° | 51° | 52° | 0.41" | — |
| 1971 | 43° | 30° | 36° | 0.03" | — |
55 years of data from SEATTLE UNIV OF WASHIN