September weather in Vancouver, WA
The average temperature in Vancouver in September is 65.4°F (54.1°F–76.7°F). Average precipitation: 1.52 inches.
September is a fall month in Vancouver, and is warmer than the annual average of 55.1°F. Daily temperatures swing about 22.6°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 12h 18m. For travel, September is one of the best months of the year to visit.
Avg High
76.7°F
Avg Low
54.1°F
Precipitation
1.52 in
Daylight
12h 18m
September records in Vancouver
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 98.1°F (1988) | 44.1°F (1973) | 1.48 in (1971) |
| September 2 | 105.1°F (1988) | 42.1°F (1960) | 0.86 in (1979) |
| September 3 | 95.0°F (2017) | 45.0°F (1980) | 1.18 in (1945) |
| September 4 | 98.1°F (1955) | 43.0°F (1956) | 1.00 in (1959) |
| September 5 | 102.0°F (2024) | 44.1°F (1956) | 0.75 in (2009) |
| September 6 | 97.0°F (1958) | 45.0°F (1960) | 0.99 in (2013) |
| September 7 | 99.0°F (1981) | 42.1°F (1992) | 1.55 in (2010) |
| September 8 | 93.0°F (1993) | 42.1°F (1960) | 0.27 in (1952) |
| September 9 | 93.9°F (1948) | 42.1°F (1962) | 0.84 in (1972) |
| September 10 | 98.1°F (1944) | 42.1°F (1952) | 1.18 in (1985) |
| September 11 | 95.0°F (2013) | 43.0°F (1964) | 0.44 in (1966) |
| September 12 | 91.9°F (1945) | 41.0°F (1955) | 0.82 in (2018) |
| September 13 | 93.0°F (1988) | 37.0°F (1970) | 0.50 in (1955) |
| September 14 | 91.9°F (1938) | 42.1°F (1969) | 2.03 in (1996) |
| September 15 | 96.1°F (1981) | 39.9°F (1970) | 0.78 in (2019) |
| September 16 | 91.9°F (1994) | 41.0°F (1965) | 0.36 in (2002) |
| September 17 | 93.9°F (1938) | 34.0°F (1965) | 2.23 in (1969) |
| September 18 | 93.0°F (1991) | 36.0°F (1965) | 1.31 in (2021) |
| September 19 | 93.0°F (1974) | 39.0°F (1957) | 1.14 in (2021) |
| September 20 | 96.1°F (1952) | 39.0°F (1957) | 1.56 in (1982) |
| September 21 | 93.9°F (1952) | 39.0°F (1964) | 0.76 in (1972) |
| September 22 | 93.0°F (1952) | 34.0°F (1961) | 0.73 in (1948) |
| September 23 | 93.9°F (1974) | 39.9°F (2000) | 0.86 in (1986) |
| September 24 | 96.1°F (1974) | 36.0°F (1970) | 0.74 in (1950) |
| September 25 | 93.9°F (1991) | 37.9°F (1955) | 1.48 in (1986) |
| September 26 | 91.9°F (1967) | 37.9°F (1961) | 1.16 in (1940) |
| September 27 | 95.0°F (2003) | 37.0°F (1945) | 1.30 in (1955) |
| September 28 | 89.1°F (1989) | 37.0°F (1983) | 1.25 in (2013) |
| September 29 | 89.1°F (1987) | 37.0°F (1954) | 1.44 in (2013) |
| September 30 | 88.0°F (1987) | 35.1°F (1954) | 1.68 in (2005) |