Weather on August 20
Spokane, WA
55 Years of Data
Avg High
82°F
Avg Low
55°F
Warmest
2009
81°F avg
Coldest
1978
56°F avg
About This Date
August 20th in Spokane, WA typically brings warm summer weather, with average highs around 82°F and lows near 55°F — a 27°F daily swing. Over 55 years of records, the warmest August 20th was in 2009 (81°F average), while the coldest was 1978 (56°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 15% of August 20th dates historically, with the wettest August 20th recording 0.79" of rain. The last decade has been 3.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.4°F warmer on this date compared to 20-30 years ago.
Planning for August 20th in Spokane, WA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.0°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 83° | 57° | 70° | — | — |
| 2024 | 80° | 59° | 70° | — | — |
| 2023 | 82° | 57° | 70° | — | — |
| 2022 | 93° | 69° | 81° | — | — |
| 2021 | 75° | 58° | 66° | 0.05" | — |
| 2020 | 85° | 63° | 74° | — | — |
| 2019 | 92° | 59° | 75° | — | — |
| 2018 | 79° | 56° | 67° | — | — |
| 2017 | 80° | 54° | 67° | — | — |
| 2016 | 91° | 56° | 73° | — | — |
| 2015 | 86° | 63° | 74° | — | — |
| 2014 | 79° | 60° | 69° | 0.3" | — |
| 2013 | 82° | 57° | 70° | — | — |
| 2012 | 91° | 63° | 77° | — | — |
| 2011 | 87° | 51° | 69° | — | — |
| 2010 | 79° | 51° | 65° | — | — |
| 2009warmest | 95° | 66° | 81° | — | — |
| 2008 | 72° | 55° | 63° | 0.51" | — |
| 2007 | 65° | 50° | 57° | 0.05" | — |
| 2006 | 92° | 57° | 74° | — | — |
| 2005 | 88° | 53° | 70° | — | — |
| 2004 | 90° | 64° | 77° | — | — |
| 2003 | 83° | 51° | 67° | — | — |
| 2002 | 77° | 52° | 64° | — | — |
| 2001 | 80° | 49° | 64° | — | — |
| 2000 | 72° | 43° | 57° | — | — |
| 1999 | 94° | 57° | 75° | — | — |
| 1998 | 90° | 51° | 70° | — | — |
| 1997 | 88° | 61° | 74° | — | — |
| 1996 | 73° | 49° | 61° | — | — |
| 1995 | 86° | 51° | 69° | — | — |
| 1994 | 84° | 52° | 68° | — | — |
| 1993 | 83° | 59° | 71° | — | — |
| 1992 | 88° | 56° | 72° | — | — |
| 1991 | 92° | 61° | 76° | — | — |
| 1990 | 80° | 56° | 68° | 0.61" | — |
| 1989 | 79° | 54° | 66° | 0.03" | — |
| 1988 | 73° | 49° | 61° | — | — |
| 1987 | 75° | 53° | 64° | — | — |
| 1986 | 88° | 54° | 71° | — | — |
| 1985 | 65° | 51° | 58° | 0.08" | — |
| 1984 | 82° | 48° | 65° | — | — |
| 1983 | 83° | 58° | 70° | — | — |
| 1982 | 88° | 72° | 80° | — | — |
| 1981 | 83° | 56° | 69° | — | — |
| 1980 | 75° | 54° | 64° | — | — |
| 1979 | 84° | 55° | 70° | — | — |
| 1978coldest | 60° | 51° | 56° | — | — |
| 1977 | 97° | 57° | 77° | — | — |
| 1976 | 75° | 52° | 63° | 0.79" | — |
| 1975 | 75° | 50° | 63° | — | — |
| 1974 | 71° | 49° | 60° | — | — |
| 1973 | 86° | 47° | 66° | — | — |
| 1972 | 88° | 52° | 70° | — | — |
| 1971 | 81° | 60° | 70° | — | — |
55 years of data from SPOKANE