Weather on October 20
Seattle, WA
55 Years of Data
Avg High
59°F
Avg Low
47°F
Warmest
2003
62°F avg
Coldest
1977
45°F avg
About This Date
October 20th in Seattle, WA typically brings cool fall weather, with average highs around 59°F and lows near 47°F. Over 54 years of records, the warmest October 20th was in 2003 (62°F average), while the coldest was 1977 (45°F) — a 17°F range across recorded history. Rain or other precipitation has occurred on about 54% of October 20th dates historically, with the wettest October 20th recording 10.26" of rain. The last decade has been 1.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.0°F warmer on this date compared to 20-30 years ago.
Planning for October 20th in Seattle, 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 | 59° | 47° | 53° | — | — |
| 2024 | 68° | 53° | 61° | 0.03" | — |
| 2023 | 61° | 54° | 57° | — | — |
| 2022 | 63° | 45° | 54° | — | — |
| 2021 | 62° | 48° | 55° | 0.28" | — |
| 2020 | 60° | 46° | 53° | — | — |
| 2019 | 54° | 45° | 49° | 0.15" | — |
| 2018 | 58° | 43° | 50° | — | — |
| 2017 | 54° | 44° | 49° | 0.28" | — |
| 2016 | 62° | 48° | 55° | 2.97" | — |
| 2015 | 65° | 51° | 58° | — | — |
| 2014 | 66° | 55° | 61° | 1.12" | — |
| 2013 | 52° | 48° | 50° | — | — |
| 2012 | 52° | 42° | 47° | 0.46" | — |
| 2011 | 58° | 48° | 53° | 0.03" | — |
| 2010 | 65° | 45° | 55° | 0.03" | — |
| 2009 | 58° | 45° | 51° | 0.03" | — |
| 2008 | 57° | 44° | 51° | 0.43" | — |
| 2007 | 54° | 44° | 49° | 0.33" | — |
| 2006 | 57° | 45° | 51° | — | — |
| 2005 | 59° | 47° | 53° | — | — |
| 2004 | 58° | 48° | 53° | — | — |
| 2003warmest | 67° | 57° | 62° | 10.26" | — |
| 2002 | 60° | 54° | 57° | 0.15" | — |
| 2001 | 53° | 43° | 48° | — | — |
| 2000 | 59° | 46° | 53° | 2.31" | — |
| 1999 | 63° | 41° | 52° | — | — |
| 1997 | 58° | 41° | 49° | — | — |
| 1996 | 54° | 39° | 46° | — | — |
| 1995 | 60° | 50° | 55° | 0.76" | — |
| 1994 | 57° | 51° | 54° | 0.36" | — |
| 1993 | 63° | 44° | 53° | — | — |
| 1992 | 64° | 55° | 60° | 0.23" | — |
| 1991 | 62° | 47° | 54° | — | — |
| 1990 | 56° | 40° | 48° | 0.05" | — |
| 1989 | 61° | 50° | 55° | 1.75" | — |
| 1988 | 63° | 52° | 57° | — | — |
| 1987 | 66° | 42° | 54° | — | — |
| 1986 | 66° | 44° | 55° | — | — |
| 1985 | 57° | 49° | 53° | 2.57" | — |
| 1984 | 55° | 39° | 47° | — | — |
| 1983 | 64° | 53° | 59° | 0.13" | — |
| 1982 | 61° | 37° | 49° | 0.03" | — |
| 1981 | 57° | 42° | 50° | — | — |
| 1980 | 59° | 52° | 55° | 0.1" | — |
| 1979 | 55° | 43° | 49° | — | — |
| 1978 | 58° | 51° | 54° | 0.51" | — |
| 1977coldest | 49° | 41° | 45° | — | — |
| 1976 | 60° | 40° | 50° | — | — |
| 1975 | 57° | 48° | 53° | 0.18" | — |
| 1974 | 60° | 45° | 52° | 1.75" | — |
| 1973 | 63° | 53° | 58° | 0.25" | — |
| 1972 | 51° | 45° | 48° | — | — |
| 1971 | 54° | 46° | 50° | 0.53" | — |
54 years of data from SEATTLE URBAN SITE