September weather in Island City, OR
The average temperature in Island City in September is 61.0°F (44.8°F–77.3°F). Average precipitation: 0.67 inches.
September is a fall month in Island City, and is warmer than the annual average of 49.4°F. Daily temperatures swing about 32.5°F between overnight low and afternoon high. Expect about 4 days with precipitation. Daylight averages about 12h 18m. For travel, September is a comfortable month to visit.
Avg High
77.3°F
Avg Low
44.8°F
Precipitation
0.67 in
Daylight
12h 18m
September records in Island City
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 100.9°F (2022) | 34.0°F (1999) | 0.18 in (2010) |
| September 2 | 100.0°F (1998) | 33.1°F (2008) | 0.41 in (1971) |
| September 3 | 102.9°F (2022) | 34.0°F (1975) | 0.08 in (2004) |
| September 4 | 102.0°F (2025) | 36.0°F (1971) | 0.71 in (1970) |
| September 5 | 102.0°F (2017) | 33.1°F (1969) | 0.74 in (2000) |
| September 6 | 97.0°F (1998) | 34.0°F (1969) | 0.52 in (1978) |
| September 7 | 98.1°F (2022) | 28.9°F (1992) | 0.72 in (1978) |
| September 8 | 97.0°F (1981) | 34.0°F (1976) | 0.29 in (1998) |
| September 9 | 97.0°F (2020) | 30.9°F (1970) | 0.60 in (2019) |
| September 10 | 97.0°F (2020) | 36.0°F (1970) | 0.18 in (1980) |
| September 11 | 93.9°F (1990) | 33.1°F (2005) | 0.58 in (2000) |
| September 12 | 93.9°F (1996) | 34.0°F (1989) | 0.92 in (1972) |
| September 13 | 93.0°F (2002) | 32.0°F (1974) | 0.58 in (1980) |
| September 14 | 91.9°F (2002) | 25.0°F (1970) | 0.79 in (1966) |
| September 15 | 95.0°F (2000) | 27.0°F (1970) | 0.31 in (2025) |
| September 16 | 95.0°F (1981) | 30.0°F (1969) | 0.29 in (1996) |
| September 17 | 97.0°F (1981) | 28.9°F (1965) | 0.23 in (1985) |
| September 18 | 98.1°F (1981) | 27.0°F (1965) | 0.82 in (1989) |
| September 19 | 89.1°F (1999) | 30.0°F (1965) | 0.54 in (2019) |
| September 20 | 90.0°F (1979) | 25.0°F (1983) | 0.47 in (2017) |
| September 21 | 91.9°F (1967) | 27.0°F (1983) | 0.38 in (1998) |
| September 22 | 93.9°F (1966) | 28.9°F (1971) | 0.33 in (2006) |
| September 23 | 96.1°F (1966) | 28.0°F (1981) | 0.28 in (1984) |
| September 24 | 91.9°F (1987) | 28.9°F (2008) | 0.37 in (1977) |
| September 25 | 91.0°F (1974) | 24.1°F (1970) | 0.50 in (1973) |
| September 26 | 91.0°F (1974) | 30.0°F (1972) | 0.41 in (1982) |
| September 27 | 91.0°F (2022) | 30.0°F (1984) | 0.54 in (1988) |
| September 28 | 91.0°F (1967) | 24.1°F (1999) | 0.35 in (1977) |
| September 29 | 89.1°F (2016) | 23.0°F (1985) | 0.40 in (2021) |
| September 30 | 87.1°F (2016) | 25.0°F (1985) | 0.38 in (1986) |