Weather on September 30
Renton, WA
55 Years of Data
About This Date
September 30th in Renton, WA typically brings mild fall weather, with average highs around 67°F and lows near 48°F. Over 56 years of records, the warmest September 30th was in 1992 (67°F average), while the coldest was 2019 (50°F) — a 17°F range across recorded history. Rain or other precipitation has occurred on about 21% of September 30th dates historically, with the wettest September 30th recording 1" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for September 30th in Renton, WA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 65° | 48° | 56° | — | — |
| 2025 | 72° | 52° | 62° | — | — |
| 2024 | 67° | 48° | 57° | — | — |
| 2023 | 63° | 48° | 55° | — | — |
| 2022 | 70° | 52° | 61° | — | — |
| 2021 | 62° | 54° | 58° | 0.28" | — |
| 2020 | 73° | 53° | 63° | — | — |
| 2019coldest | 60° | 40° | 50° | — | — |
| 2018 | 66° | 56° | 61° | 0.02" | — |
| 2017 | 66° | 54° | 60° | — | — |
| 2016 | 66° | 45° | 55° | — | — |
| 2015 | 66° | 50° | 58° | — | — |
| 2014 | 66° | 54° | 60° | — | — |
| 2013 | 57° | 49° | 53° | 0.76" | — |
| 2012 | 70° | 46° | 58° | — | — |
| 2011 | 67° | 52° | 59° | — | — |
| 2010 | 70° | 54° | 62° | — | — |
| 2009 | 61° | 43° | 52° | — | — |
| 2008 | 71° | 52° | 61° | — | — |
| 2007 | 55° | 50° | 53° | 1" | — |
| 2006 | 61° | 51° | 56° | — | — |
| 2005 | 63° | 54° | 58° | 0.03" | — |
| 2004 | 63° | 50° | 56° | — | — |
| 2003 | 71° | 56° | 63° | — | — |
| 2002 | 59° | 44° | 52° | — | — |
| 2001 | 66° | 53° | 60° | — | — |
| 2000 | 64° | 56° | 60° | 0.29" | — |
| 1999 | 65° | 48° | 56° | — | — |
| 1998 | 71° | 45° | 58° | — | — |
| 1997 | 62° | 56° | 59° | 0.15" | — |
| 1996 | 66° | 49° | 57° | — | — |
| 1995 | 66° | 55° | 61° | 0.25" | — |
| 1994 | 71° | 61° | 66° | — | — |
| 1993 | 78° | 49° | 63° | — | — |
| 1992warmest | 81° | 53° | 67° | — | — |
| 1991 | 75° | 49° | 62° | — | — |
| 1990 | 72° | 41° | 56° | — | — |
| 1989 | 64° | 55° | 60° | 0.17" | — |
| 1988 | 73° | 44° | 59° | — | — |
| 1987 | 80° | 44° | 62° | — | — |
| 1986 | 60° | 50° | 55° | — | — |
| 1985 | 71° | 30° | 51° | — | — |
| 1984 | 74° | 47° | 60° | — | — |
| 1983 | 66° | 36° | 51° | — | — |
| 1982 | 68° | 36° | 52° | — | — |
| 1981 | 64° | 40° | 52° | 0.02" | — |
| 1980 | 71° | 53° | 62° | 0.27" | — |
| 1979 | 69° | 53° | 61° | — | — |
| 1978 | 72° | 49° | 60° | 0.13" | — |
| 1977 | 66° | 45° | 55° | — | — |
| 1976 | 70° | 47° | 58° | — | — |
| 1975 | 78° | 42° | 60° | — | — |
| 1974 | 67° | 38° | 52° | — | — |
| 1973 | 63° | 44° | 53° | — | — |
| 1972 | 69° | 40° | 54° | — | — |
| 1971 | 63° | 42° | 52° | — | — |
Renton, WA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Renton, WA Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Renton, WA Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Renton, WA
Most pleasant months in Renton, WA: May, June, July, August, September.
What to expect on September 30th
This page shows what actually happened each year. For the odds — typical high and low, and how often it stays dry — see the climatological outlook for this date.
September 30th outlook →