September weather in Westport, WA
The average temperature in Westport in September is 57.8°F (48.9°F–66.7°F). Average precipitation: 2.94 inches.
September is a fall month in Westport, and is warmer than the annual average of 50.8°F. Daily temperatures swing about 17.8°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 12h 19m. For travel, September is a comfortable month to visit.
Avg High
66.7°F
Avg Low
48.9°F
Precipitation
2.94 in
Daylight
12h 19m
September records in Westport
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 80.1°F (1993) | 37.9°F (1973) | 1.05 in (2010) |
| September 2 | 88.0°F (2006) | 37.0°F (1960) | 0.87 in (1971) |
| September 3 | 88.0°F (1972) | 37.0°F (1965) | 0.84 in (1977) |
| September 4 | 91.9°F (1955) | 37.9°F (1956) | 1.59 in (1959) |
| September 5 | 84.9°F (1956) | 33.1°F (2002) | 1.05 in (1984) |
| September 6 | 87.1°F (1975) | 37.0°F (1960) | 1.29 in (1984) |
| September 7 | 82.9°F (1958) | 37.0°F (1960) | 1.15 in (1995) |
| September 8 | 82.9°F (1948) | 39.0°F (1962) | 0.73 in (1972) |
| September 9 | 84.9°F (1948) | 34.0°F (1964) | 2.60 in (1978) |
| September 10 | 89.1°F (1997) | 37.9°F (1964) | 1.22 in (1967) |
| September 11 | 87.1°F (2007) | 37.9°F (1988) | 0.71 in (2004) |
| September 12 | 87.1°F (2009) | 37.9°F (1967) | 0.63 in (1985) |
| September 13 | 89.1°F (1975) | 32.0°F (1970) | 0.96 in (1985) |
| September 14 | 87.1°F (1979) | 34.0°F (1970) | 1.45 in (1996) |
| September 15 | 87.1°F (1967) | 35.1°F (1969) | 1.10 in (1948) |
| September 16 | 81.0°F (2008) | 37.0°F (1992) | 0.95 in (1997) |
| September 17 | 84.0°F (1962) | 36.0°F (1965) | 2.70 in (1997) |
| September 18 | 88.0°F (1991) | 35.1°F (1965) | 1.46 in (1997) |
| September 19 | 82.9°F (1991) | 35.1°F (1983) | 0.92 in (1977) |
| September 20 | 84.9°F (1974) | 37.9°F (1965) | 1.01 in (1973) |
| September 21 | 87.1°F (1974) | 34.0°F (1955) | 2.22 in (1959) |
| September 22 | 88.0°F (1974) | 36.0°F (1956) | 1.65 in (1978) |
| September 23 | 91.0°F (1989) | 36.0°F (2000) | 1.82 in (1978) |
| September 24 | 84.0°F (1974) | 33.1°F (1948) | 0.97 in (1960) |
| September 25 | 90.0°F (1974) | 34.0°F (1970) | 1.06 in (1988) |
| September 26 | 82.9°F (1963) | 35.1°F (1961) | 1.40 in (1948) |
| September 27 | 82.0°F (1993) | 30.0°F (1972) | 1.69 in (1971) |
| September 28 | 87.1°F (2003) | 34.0°F (1983) | 1.95 in (1971) |
| September 29 | 84.0°F (1987) | 34.0°F (1954) | 0.88 in (1967) |
| September 30 | 88.0°F (1987) | 34.0°F (1955) | 1.61 in (2005) |