Weather on September 18
Tacoma, WA
55 Years of Data
Avg High
69°F
Avg Low
52°F
Warmest
2000
69°F avg
Coldest
1988
51°F avg
About This Date
September 18th in Tacoma, WA typically brings mild fall weather, with average highs around 69°F and lows near 52°F. Over 55 years of records, the warmest September 18th was in 2000 (69°F average), while the coldest was 1988 (51°F) — a 18°F range across recorded history. Rain or other precipitation has occurred on about 40% of September 18th dates historically, with the wettest September 18th recording 2.44" of rain. The last decade has been 1.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.1°F warmer on this date compared to 20-30 years ago.
Planning for September 18th in Tacoma, 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 | 70° | 56° | 63° | — | — |
| 2024 | 69° | 58° | 63° | — | — |
| 2023 | 69° | 55° | 62° | 0.25" | — |
| 2022 | 70° | 54° | 62° | — | — |
| 2021 | 64° | 53° | 59° | 0.38" | — |
| 2020 | 66° | 58° | 62° | 0.81" | — |
| 2019 | 65° | 55° | 60° | 0.15" | — |
| 2018 | 65° | 46° | 55° | — | — |
| 2017 | 64° | 51° | 58° | 0.64" | — |
| 2016 | 70° | 57° | 63° | 0.1" | — |
| 2015 | 69° | 53° | 61° | — | — |
| 2014 | 71° | 60° | 66° | 0.1" | — |
| 2013 | 69° | 55° | 62° | — | — |
| 2012 | 77° | 51° | 64° | — | — |
| 2011 | 66° | 52° | 59° | 0.51" | — |
| 2010 | 69° | 58° | 63° | 2.44" | — |
| 2009 | 76° | 53° | 64° | — | — |
| 2008 | 73° | 56° | 64° | — | — |
| 2007 | 65° | 53° | 59° | 0.08" | — |
| 2006 | 67° | 55° | 61° | 1.04" | — |
| 2005 | 68° | 49° | 58° | — | — |
| 2004 | 60° | 52° | 56° | 1.09" | — |
| 2003 | 72° | 55° | 63° | 0.03" | — |
| 2002 | 68° | 47° | 57° | — | — |
| 2001 | 65° | 56° | 60° | — | — |
| 2000warmest | 75° | 63° | 69° | — | — |
| 1999 | 72° | 49° | 60° | — | — |
| 1998 | 67° | 55° | 61° | 0.25" | — |
| 1997 | 62° | 54° | 58° | 1.09" | — |
| 1996 | 65° | 44° | 54° | 0.03" | — |
| 1995 | 71° | 60° | 66° | — | — |
| 1994 | 73° | 54° | 63° | — | — |
| 1993 | 72° | 45° | 58° | — | — |
| 1992 | 69° | 44° | 57° | — | — |
| 1991 | 79° | 55° | 67° | — | — |
| 1990 | 71° | 51° | 61° | — | — |
| 1989 | 67° | 45° | 56° | — | — |
| 1988coldest | 62° | 40° | 51° | — | — |
| 1987 | 71° | 45° | 58° | — | — |
| 1986 | 63° | 53° | 58° | 1.5" | — |
| 1985 | 66° | 45° | 55° | — | — |
| 1984 | 81° | 54° | 67° | — | — |
| 1983 | 66° | 48° | 57° | 1.68" | — |
| 1982 | 79° | 49° | 64° | — | — |
| 1981 | 75° | 57° | 66° | — | — |
| 1980 | 64° | 54° | 59° | 0.51" | — |
| 1979 | 75° | 54° | 64° | — | — |
| 1978 | 65° | 43° | 54° | 0.03" | — |
| 1977 | 65° | 49° | 57° | 0.25" | — |
| 1976 | 70° | 54° | 62° | — | — |
| 1975 | 69° | 47° | 58° | — | — |
| 1974 | 76° | 54° | 65° | — | — |
| 1973 | — | 53° | — | 0.18" | — |
| 1972 | 64° | 51° | 58° | — | — |
| 1971 | 76° | 49° | 62° | — | — |
55 years of data from TACOMA CITY HALL