Weather on August 20
Bellevue, WA
55 Years of Data
Avg High
76°F
Avg Low
57°F
Warmest
2016
76°F avg
Coldest
1976
56°F avg
About This Date
August 20th in Bellevue, WA typically brings pleasant summer weather, with average highs around 76°F and lows near 57°F. Over 54 years of records, the warmest August 20th was in 2016 (76°F average), while the coldest was 1976 (56°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 22% of August 20th dates historically, with the wettest August 20th recording 1.52" of rain. The last decade has been 3.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.3°F warmer on this date compared to 20-30 years ago.
Planning for August 20th in Bellevue, WA? Great weather for outdoor activities.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 76° | 57° | 66° | — | — |
| 2024 | 71° | 60° | 66° | 0.23" | — |
| 2023 | 79° | 57° | 68° | — | — |
| 2022 | 79° | 64° | 71° | — | — |
| 2021 | 67° | 58° | 62° | — | — |
| 2020 | 81° | 63° | 72° | 0.15" | — |
| 2019 | 83° | 55° | 69° | — | — |
| 2018 | 80° | 57° | 69° | — | — |
| 2017 | 76° | 56° | 66° | — | — |
| 2016warmest | 91° | 60° | 76° | — | — |
| 2015 | 74° | 59° | 66° | — | — |
| 2014 | 73° | 58° | 65° | — | — |
| 2013 | 76° | 58° | 67° | — | — |
| 2012 | 79° | 59° | 69° | — | — |
| 2011 | 85° | 56° | 70° | — | — |
| 2010 | 70° | 55° | 62° | — | — |
| 2009 | 83° | 63° | 73° | — | — |
| 2008 | 71° | 58° | 64° | 1.32" | — |
| 2007 | 68° | 57° | 63° | 0.76" | — |
| 2006 | 84° | 54° | 69° | — | — |
| 2005 | 80° | 55° | 68° | — | — |
| 2004 | 80° | 60° | 70° | — | — |
| 2003 | 80° | 53° | 67° | — | — |
| 2002 | 67° | 55° | 61° | 0.03" | — |
| 2001 | 74° | 50° | 62° | — | — |
| 2000 | 74° | 58° | 66° | — | — |
| 1999 | 79° | 53° | 66° | — | — |
| 1997 | 68° | 60° | 64° | 0.97" | — |
| 1996 | 71° | 56° | 63° | 0.13" | — |
| 1995 | 79° | 53° | 66° | — | — |
| 1994 | 76° | 58° | 67° | — | — |
| 1993 | 77° | 59° | 68° | — | — |
| 1992 | 75° | 54° | 64° | — | — |
| 1991 | 83° | 58° | 70° | — | — |
| 1990 | 79° | 61° | 70° | — | — |
| 1989 | 74° | 60° | 67° | 0.13" | — |
| 1988 | 70° | 53° | 61° | — | — |
| 1987 | 71° | 54° | 62° | — | — |
| 1986 | 81° | 58° | 69° | — | — |
| 1985 | 70° | 57° | 63° | — | — |
| 1984 | 75° | 53° | 64° | — | — |
| 1983 | 74° | 55° | 64° | — | — |
| 1982 | 86° | 61° | 73° | 0.03" | — |
| 1981 | 71° | 60° | 66° | — | — |
| 1980 | 73° | 54° | 63° | — | — |
| 1979 | 76° | 59° | 67° | — | — |
| 1978 | 69° | 55° | 62° | 0.18" | — |
| 1977 | 76° | 62° | 69° | — | — |
| 1976coldest | 59° | 54° | 56° | 1.52" | — |
| 1975 | 66° | 55° | 61° | — | — |
| 1974 | 63° | 55° | 59° | — | — |
| 1973 | 77° | 55° | 66° | — | — |
| 1972 | 79° | 59° | 69° | 0.08" | — |
| 1971 | 84° | 62° | 73° | — | — |
54 years of data from SEATTLE UNIV OF WASHIN