Weather on August 31
Bellevue, WA
55 Years of Data
Avg High
73°F
Avg Low
56°F
Warmest
2022
76°F avg
Coldest
1973
54°F avg
About This Date
August 31st in Bellevue, WA typically brings pleasant summer weather, with average highs around 73°F and lows near 56°F. Over 54 years of records, the warmest August 31st was in 2022 (76°F average), while the coldest was 1973 (54°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 35% of August 31st dates historically, with the wettest August 31st recording 1.57" of rain. The last decade has been 1.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.4°F warmer on this date compared to 20-30 years ago.
Planning for August 31st in Bellevue, WA? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
0.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 76° | 57° | 66° | — | — |
| 2024 | 83° | 58° | 70° | — | — |
| 2023 | 71° | 60° | 66° | — | — |
| 2022warmest | 89° | 62° | 76° | — | — |
| 2021 | 67° | 51° | 59° | 0.05" | — |
| 2020 | 72° | 54° | 63° | 0.03" | — |
| 2019 | 80° | 61° | 70° | — | — |
| 2018 | 72° | 57° | 64° | 0.18" | — |
| 2017 | 76° | 59° | 67° | 0.33" | — |
| 2016 | 70° | 60° | 65° | 0.03" | — |
| 2015 | 65° | 61° | 63° | 0.2" | — |
| 2014 | 72° | 56° | 64° | 0.2" | — |
| 2013 | 79° | 57° | 68° | — | — |
| 2012 | 72° | 49° | 60° | — | — |
| 2011 | 70° | 54° | 62° | — | — |
| 2010 | 60° | 53° | 57° | 1.57" | — |
| 2009 | 74° | 58° | 66° | — | — |
| 2008 | 65° | 51° | 58° | 0.1" | — |
| 2007 | 72° | 56° | 64° | 0.03" | — |
| 2006 | 72° | 52° | 62° | — | — |
| 2005 | 75° | 59° | 67° | — | — |
| 2004 | 79° | 59° | 69° | — | — |
| 2003 | 77° | 55° | 66° | — | — |
| 2002 | 79° | 55° | 67° | — | — |
| 2001 | 74° | 61° | 67° | — | — |
| 2000 | 69° | 53° | 61° | — | — |
| 1999 | 65° | 53° | 59° | 0.18" | — |
| 1997 | 78° | 55° | 67° | — | — |
| 1996 | 71° | 57° | 64° | 0.08" | — |
| 1995 | 75° | 53° | 64° | — | — |
| 1994 | 79° | 57° | 68° | — | — |
| 1993 | 81° | 55° | 68° | — | — |
| 1992 | 76° | 57° | 66° | — | — |
| 1991 | 63° | 57° | 60° | 0.79" | — |
| 1990 | 73° | 59° | 66° | — | — |
| 1989 | 65° | 56° | 60° | — | — |
| 1988 | 75° | 52° | 63° | — | — |
| 1987 | 87° | 61° | 74° | — | — |
| 1986 | 71° | 59° | 65° | — | — |
| 1985 | 70° | 53° | 61° | — | — |
| 1984 | 71° | 57° | 64° | — | — |
| 1983 | 72° | 61° | 66° | 0.03" | — |
| 1982 | 76° | 57° | 66° | 0.1" | — |
| 1981 | 73° | 54° | 63° | 0.38" | — |
| 1980 | 65° | 54° | 59° | — | — |
| 1979 | 76° | 59° | 67° | — | — |
| 1978 | 75° | 60° | 68° | 0.28" | — |
| 1977 | 70° | 54° | 62° | — | — |
| 1976 | 78° | 55° | 67° | — | — |
| 1975 | 67° | 54° | 60° | 0.1" | — |
| 1974 | 83° | 58° | 70° | — | — |
| 1973coldest | 57° | 50° | 54° | 0.89" | — |
| 1972 | 77° | 54° | 65° | — | — |
| 1971 | 73° | 59° | 66° | — | — |
54 years of data from SEATTLE UNIV OF WASHIN