Weather on August 20
Renton, WA
55 Years of Data
Avg High
77°F
Avg Low
56°F
Warmest
2016
76°F avg
Coldest
1973
58°F avg
About This Date
August 20th in Renton, WA typically brings pleasant summer weather, with average highs around 77°F and lows near 56°F. Over 55 years of records, the warmest August 20th was in 2016 (76°F average), while the coldest was 1973 (58°F) — a 18°F range across recorded history. Rain or other precipitation has occurred on about 20% of August 20th dates historically, with the wettest August 20th recording 1.75" of rain. The last decade has been 1.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.8°F warmer on this date compared to 20-30 years ago.
Planning for August 20th in Renton, WA? Great weather for outdoor activities.
Warming Trend
1.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 76° | 61° | 68° | — | — |
| 2024 | 69° | 59° | 64° | 0.3" | — |
| 2023 | 80° | 56° | 68° | — | — |
| 2022 | 79° | 65° | 72° | — | — |
| 2021 | 67° | 59° | 63° | — | — |
| 2020 | 81° | 64° | 72° | 0.13" | — |
| 2019 | 83° | 55° | 69° | — | — |
| 2018 | 80° | 59° | 70° | — | — |
| 2017 | 77° | 55° | 66° | — | — |
| 2016warmest | 92° | 61° | 76° | — | — |
| 2015 | 74° | 60° | 67° | — | — |
| 2014 | 73° | 60° | 67° | — | — |
| 2013 | 76° | 60° | 68° | — | — |
| 2012 | 79° | 62° | 70° | — | — |
| 2011 | 84° | 55° | 70° | — | — |
| 2010 | 69° | 55° | 62° | — | — |
| 2009 | 82° | 63° | 72° | — | — |
| 2008 | 68° | 58° | 63° | 1.75" | — |
| 2007 | 68° | 58° | 63° | 0.43" | — |
| 2006 | 85° | 55° | 70° | — | — |
| 2005 | 82° | 57° | 70° | — | — |
| 2004 | 81° | 62° | 71° | — | — |
| 2003 | 80° | 53° | 67° | — | — |
| 2002 | 68° | 57° | 63° | 0.05" | — |
| 2001 | 74° | 51° | 62° | — | — |
| 2000 | 73° | 58° | 65° | — | — |
| 1999 | 82° | 59° | 71° | — | — |
| 1998 | 82° | 55° | 69° | — | — |
| 1997 | 77° | 59° | 68° | 0.13" | — |
| 1996 | 70° | 58° | 64° | — | — |
| 1995 | 80° | 52° | 66° | — | — |
| 1994 | 79° | 58° | 68° | — | — |
| 1993 | 78° | 58° | 68° | — | — |
| 1992 | 76° | 54° | 65° | — | — |
| 1991 | 84° | 59° | 72° | — | — |
| 1990 | 77° | 55° | 66° | — | — |
| 1989 | 74° | 60° | 67° | 0.1" | — |
| 1988 | 69° | 48° | 59° | — | — |
| 1987 | 77° | 56° | 66° | — | — |
| 1986 | 83° | 55° | 69° | — | — |
| 1985 | 70° | 52° | 61° | — | — |
| 1984 | 80° | 43° | 61° | — | — |
| 1983 | 79° | 47° | 63° | — | — |
| 1982 | 86° | 56° | 71° | — | — |
| 1981 | 69° | 57° | 63° | 0.03" | — |
| 1980 | 72° | 52° | 62° | — | — |
| 1979 | 76° | 57° | 66° | — | — |
| 1978 | 66° | 53° | 60° | 0.28" | — |
| 1977 | 80° | 50° | 65° | — | — |
| 1976 | 71° | 55° | 63° | 0.41" | — |
| 1975 | 71° | 55° | 63° | — | — |
| 1974 | 69° | 53° | 61° | — | — |
| 1973coldest | 75° | 41° | 58° | — | — |
| 1972 | 75° | 51° | 63° | 0.05" | — |
| 1971 | 81° | 59° | 70° | — | — |
55 years of data from RENTON MUNI AP