September weather in Northport, WA
The average temperature in Northport in September is 58.9°F (42.6°F–75.2°F). Average precipitation: 0.97 inches.
September is a fall month in Northport, and is warmer than the annual average of 46.4°F. Daily temperatures swing about 32.6°F between overnight low and afternoon high. Expect about 5 days with precipitation. Daylight averages about 12h 20m. For travel, September is a comfortable month to visit.
Avg High
75.2°F
Avg Low
42.6°F
Precipitation
0.97 in
Daylight
12h 20m
September records in Northport
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 102.0°F (1950) | 32.0°F (1905) | 0.55 in (1981) |
| September 2 | 105.1°F (1950) | 33.1°F (1903) | 0.54 in (1912) |
| September 3 | 104.0°F (1938) | 28.9°F (1903) | 0.55 in (1911) |
| September 4 | 102.0°F (2025) | 27.0°F (1903) | 0.90 in (1960) |
| September 5 | 99.0°F (1955) | 30.9°F (1956) | 1.28 in (1937) |
| September 6 | 99.0°F (1944) | 30.9°F (1960) | 0.70 in (1910) |
| September 7 | 98.1°F (1944) | 30.9°F (1960) | 0.51 in (2013) |
| September 8 | 97.0°F (1949) | 30.9°F (1962) | 0.55 in (2003) |
| September 9 | 98.1°F (1963) | 33.1°F (1906) | 0.53 in (1931) |
| September 10 | 100.0°F (1944) | 25.0°F (1904) | 0.60 in (1982) |
| September 11 | 99.0°F (1940) | 23.0°F (1906) | 0.40 in (2004) |
| September 12 | 98.1°F (2011) | 28.0°F (1904) | 0.57 in (1993) |
| September 13 | 98.1°F (2011) | 25.0°F (1904) | 0.57 in (1993) |
| September 14 | 98.1°F (1938) | 21.0°F (1936) | 0.82 in (1933) |
| September 15 | 99.0°F (1938) | 28.0°F (1904) | 0.87 in (1959) |
| September 16 | 100.0°F (1938) | 28.0°F (1965) | 0.81 in (1954) |
| September 17 | 99.0°F (1938) | 28.9°F (1904) | 1.23 in (1988) |
| September 18 | 98.1°F (1938) | 30.9°F (1945) | 0.88 in (2013) |
| September 19 | 98.1°F (2011) | 23.0°F (1904) | 0.83 in (1941) |
| September 20 | 97.0°F (2011) | 25.0°F (1904) | 0.94 in (1945) |
| September 21 | 98.1°F (2011) | 27.0°F (1983) | 0.60 in (1913) |
| September 22 | 97.0°F (2011) | 26.1°F (2000) | 0.90 in (1900) |
| September 23 | 93.9°F (1938) | 25.0°F (2000) | 1.25 in (1958) |
| September 24 | 95.0°F (1952) | 17.1°F (1908) | 1.50 in (1958) |
| September 25 | 95.0°F (1952) | 23.0°F (1908) | 0.49 in (1998) |
| September 26 | 91.0°F (1952) | 19.9°F (1908) | 0.70 in (1982) |
| September 27 | 90.0°F (1967) | 26.1°F (1999) | 0.44 in (1986) |
| September 28 | 91.9°F (1949) | 26.1°F (1906) | 0.79 in (2019) |
| September 29 | 84.9°F (1963) | 26.1°F (1903) | 0.57 in (1971) |
| September 30 | 84.0°F (1963) | 24.1°F (1983) | 1.43 in (1944) |