Weather on October 18
Seattle, WA
55 Years of Data
Avg High
60°F
Avg Low
47°F
Warmest
2014
64°F avg
Coldest
1972
47°F avg
About This Date
October 18th in Seattle, WA typically brings mild fall weather, with average highs around 60°F and lows near 47°F. Over 54 years of records, the warmest October 18th was in 2014 (64°F average), while the coldest was 1972 (47°F) — a 17°F range across recorded history. Rain or other precipitation has occurred on about 37% of October 18th dates historically, with the wettest October 18th recording 2.64" of rain. The last decade has been 2.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.2°F warmer on this date compared to 20-30 years ago.
Planning for October 18th in Seattle, WA? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 56° | 47° | 51° | 0.69" | — |
| 2024 | 55° | 46° | 51° | 0.05" | — |
| 2023 | 70° | 49° | 59° | — | — |
| 2022 | 67° | 48° | 57° | — | — |
| 2021 | 56° | 50° | 53° | — | — |
| 2020 | 63° | 53° | 58° | — | — |
| 2019 | 53° | 49° | 51° | 1.37" | — |
| 2018 | 69° | 42° | 56° | — | — |
| 2017 | 65° | 47° | 56° | 2.64" | — |
| 2016 | 61° | 47° | 54° | 0.3" | — |
| 2015 | 62° | 59° | 61° | 0.41" | — |
| 2014warmest | 68° | 59° | 64° | 0.81" | — |
| 2013 | 55° | 45° | 50° | — | — |
| 2012 | 65° | 46° | 55° | 1.7" | — |
| 2011 | 64° | 47° | 55° | — | — |
| 2010 | 59° | 41° | 50° | — | — |
| 2009 | 63° | 53° | 58° | 0.03" | — |
| 2008 | 57° | 44° | 51° | — | — |
| 2007 | 62° | 46° | 54° | 0.53" | — |
| 2006 | 54° | 50° | 52° | 0.53" | — |
| 2005 | 57° | 53° | 55° | 0.03" | — |
| 2004 | 55° | 48° | 52° | 0.1" | — |
| 2003 | 68° | 50° | 59° | — | — |
| 2002 | 55° | 46° | 51° | — | — |
| 2001 | 56° | 44° | 50° | — | — |
| 2000 | 60° | 48° | 54° | — | — |
| 1999 | 64° | 44° | 54° | — | — |
| 1997 | 54° | 46° | 50° | — | — |
| 1996 | 52° | 42° | 47° | — | — |
| 1995 | 62° | 43° | 52° | — | — |
| 1994 | 59° | 48° | 54° | — | — |
| 1993 | 60° | 45° | 52° | — | — |
| 1992 | 62° | 51° | 57° | 0.36" | — |
| 1991 | 60° | 44° | 52° | — | — |
| 1990 | 57° | 47° | 52° | 0.23" | — |
| 1989 | 62° | 50° | 56° | 0.48" | — |
| 1988 | 53° | 48° | 51° | 0.46" | — |
| 1987 | 60° | 40° | 50° | — | — |
| 1986 | 57° | 46° | 52° | — | — |
| 1985 | 63° | 50° | 56° | — | — |
| 1984 | 57° | 40° | 48° | — | — |
| 1983 | 58° | 47° | 52° | — | — |
| 1982 | 55° | 40° | 47° | — | — |
| 1981 | 53° | 49° | 51° | — | — |
| 1980 | 62° | 44° | 53° | — | — |
| 1979 | 53° | 49° | 51° | 1.24" | — |
| 1978 | 65° | 50° | 57° | — | — |
| 1977 | 57° | 45° | 51° | — | — |
| 1976 | 64° | 40° | 52° | — | — |
| 1975 | 58° | 49° | 53° | 0.05" | — |
| 1974 | 67° | 45° | 56° | — | — |
| 1973 | 67° | 51° | 59° | — | — |
| 1972coldest | 50° | 44° | 47° | — | — |
| 1971 | 52° | 46° | 49° | 0.43" | — |
54 years of data from SEATTLE URBAN SITE