September weather in Sultan, WA
The average temperature in Sultan in September is 59.9°F (47.3°F–72.5°F). Average precipitation: 3.49 inches.
September is a fall month in Sultan, and is warmer than the annual average of 51.6°F. Daily temperatures swing about 25.2°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 12h 20m. For travel, September is a comfortable month to visit.
Avg High
72.5°F
Avg Low
47.3°F
Precipitation
3.49 in
Daylight
12h 20m
September records in Sultan
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 93.0°F (1987) | 37.0°F (1984) | 2.19 in (2010) |
| September 2 | 91.9°F (2006) | 36.0°F (1960) | 1.24 in (1981) |
| September 3 | 98.1°F (1988) | 35.1°F (1956) | 1.54 in (2014) |
| September 4 | 97.0°F (1953) | 34.0°F (1956) | 0.97 in (1960) |
| September 5 | 98.1°F (1944) | 36.0°F (1947) | 2.26 in (1931) |
| September 6 | 93.0°F (1956) | 36.0°F (1947) | 1.27 in (2013) |
| September 7 | 93.0°F (1935) | 36.0°F (1960) | 0.90 in (2010) |
| September 8 | 93.9°F (1981) | 36.0°F (1956) | 2.27 in (1951) |
| September 9 | 91.9°F (1935) | 36.0°F (1964) | 1.37 in (1972) |
| September 10 | 95.0°F (1944) | 37.9°F (1964) | 1.47 in (2005) |
| September 11 | 93.9°F (1953) | 34.0°F (1986) | 1.55 in (1962) |
| September 12 | 93.0°F (1924) | 32.0°F (1982) | 0.78 in (1934) |
| September 13 | 89.1°F (1957) | 30.9°F (1970) | 0.99 in (1941) |
| September 14 | 93.9°F (1951) | 35.1°F (1971) | 1.46 in (1963) |
| September 15 | 95.0°F (1979) | 34.0°F (1970) | 1.94 in (1968) |
| September 16 | 98.1°F (1967) | 33.1°F (1971) | 1.74 in (1985) |
| September 17 | 91.0°F (1967) | 35.1°F (1953) | 1.37 in (1964) |
| September 18 | 84.0°F (1991) | 32.0°F (1947) | 1.26 in (1997) |
| September 19 | 87.1°F (1991) | 32.0°F (1947) | 1.50 in (1932) |
| September 20 | 84.9°F (2009) | 34.0°F (1951) | 1.95 in (1944) |
| September 21 | 90.0°F (1952) | 35.1°F (1949) | 1.90 in (1972) |
| September 22 | 91.0°F (1974) | 33.1°F (1961) | 1.81 in (1969) |
| September 23 | 95.0°F (2009) | 25.0°F (2005) | 1.35 in (1972) |
| September 24 | 93.9°F (1943) | 32.0°F (1970) | 1.06 in (1986) |
| September 25 | 93.0°F (1997) | 30.9°F (1972) | 1.71 in (1992) |
| September 26 | 93.0°F (1997) | 35.1°F (1934) | 1.69 in (2020) |
| September 27 | 91.9°F (1967) | 30.9°F (1972) | 0.94 in (1930) |
| September 28 | 90.0°F (1967) | 30.9°F (1983) | 1.70 in (2023) |
| September 29 | 90.0°F (2017) | 30.0°F (1983) | 1.75 in (2013) |
| September 30 | 88.0°F (1992) | 30.0°F (1983) | 1.76 in (1953) |