September weather in Seward, AK
The average temperature in Seward in September is 49.6°F (43.4°F–55.7°F). Average precipitation: 9.90 inches.
September is a fall month in Seward, and is warmer than the annual average of 40.4°F. Daily temperatures swing about 12.3°F between overnight low and afternoon high. Expect about 17 days with precipitation. Daylight averages about 12h 31m. For travel, September is a wet month.
Avg High
55.7°F
Avg Low
43.4°F
Precipitation
9.90 in
Daylight
12h 31m
September records in Seward
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 73.0°F (2016) | 35.1°F (1922) | 2.23 in (1998) |
| September 2 | 75.0°F (1937) | 28.9°F (1944) | 2.62 in (1935) |
| September 3 | 73.0°F (1996) | 37.0°F (1922) | 2.50 in (1957) |
| September 4 | 69.1°F (2002) | 35.1°F (1913) | 3.02 in (1953) |
| September 5 | 70.0°F (1942) | 36.0°F (1943) | 1.95 in (1951) |
| September 6 | 73.0°F (1942) | 32.0°F (1944) | 2.57 in (1967) |
| September 7 | 72.0°F (1942) | 37.0°F (1913) | 4.06 in (1943) |
| September 8 | 80.1°F (1910) | 35.1°F (1908) | 2.92 in (1997) |
| September 9 | 84.0°F (1910) | 30.9°F (1943) | 4.40 in (1917) |
| September 10 | 78.1°F (1910) | 30.9°F (1970) | 7.20 in (1917) |
| September 11 | 75.0°F (2018) | 33.1°F (1980) | 4.15 in (2016) |
| September 12 | 75.9°F (2018) | 28.9°F (1934) | 4.33 in (1957) |
| September 13 | 75.9°F (2018) | 32.0°F (1917) | 2.12 in (2001) |
| September 14 | 71.1°F (2019) | 34.0°F (1948) | 3.94 in (1979) |
| September 15 | 75.0°F (1914) | 30.9°F (1944) | 3.40 in (1918) |
| September 16 | 72.0°F (2010) | 32.0°F (1942) | 3.84 in (1981) |
| September 17 | 70.0°F (1954) | 32.0°F (1943) | 2.80 in (1950) |
| September 18 | 70.0°F (2010) | 30.9°F (1914) | 2.49 in (1966) |
| September 19 | 68.0°F (1929) | 28.9°F (1914) | 5.88 in (2012) |
| September 20 | 66.0°F (1919) | 32.0°F (1929) | 9.81 in (1995) |
| September 21 | 68.0°F (1913) | 30.9°F (1933) | 3.00 in (1931) |
| September 22 | 64.9°F (1919) | 30.9°F (1992) | 3.40 in (2012) |
| September 23 | 66.0°F (1952) | 30.0°F (1914) | 3.10 in (1921) |
| September 24 | 66.0°F (1945) | 30.0°F (1912) | 2.75 in (2002) |
| September 25 | 68.0°F (1919) | 26.1°F (1946) | 2.45 in (1913) |
| September 26 | 66.0°F (1912) | 27.0°F (1908) | 3.05 in (1935) |
| September 27 | 64.9°F (1912) | 28.0°F (1923) | 2.66 in (1963) |
| September 28 | 64.9°F (1912) | 28.0°F (1923) | 2.25 in (1921) |
| September 29 | 66.9°F (1912) | 30.9°F (1930) | 3.61 in (1959) |
| September 30 | 66.9°F (1954) | 30.0°F (1909) | 3.21 in (2003) |