September weather in Klawock, AK
The average temperature in Klawock in September is 53.3°F (46.8°F–59.8°F). Average precipitation: 10.72 inches.
September is a fall month in Klawock, and is warmer than the annual average of 45.2°F. Daily temperatures swing about 13°F between overnight low and afternoon high. Expect about 22 days with precipitation. Daylight averages about 12h 26m. For travel, September is a wet month.
Avg High
59.8°F
Avg Low
46.8°F
Precipitation
10.72 in
Daylight
12h 26m
September records in Klawock
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 75.9°F (2025) | 43.0°F (2012) | 2.31 in (2003) |
| September 2 | 73.9°F (2025) | 37.9°F (2015) | 1.56 in (2010) |
| September 3 | 71.1°F (2025) | 37.9°F (2000) | 2.51 in (2011) |
| September 4 | 73.0°F (2017) | 39.9°F (2015) | 2.45 in (2022) |
| September 5 | 82.9°F (2017) | 39.9°F (1998) | 1.44 in (2024) |
| September 6 | 73.0°F (2013) | 44.1°F (2023) | 2.19 in (2011) |
| September 7 | 72.0°F (2019) | 41.0°F (2012) | 1.91 in (2006) |
| September 8 | 71.1°F (2019) | 44.1°F (2000) | 2.45 in (2011) |
| September 9 | 77.0°F (2019) | 39.9°F (2014) | 0.82 in (2016) |
| September 10 | 73.9°F (2023) | 37.9°F (2000) | 1.59 in (2015) |
| September 11 | 70.0°F (2007) | 39.0°F (1997) | 1.29 in (2015) |
| September 12 | 73.9°F (2011) | 39.0°F (2020) | 2.32 in (2012) |
| September 13 | 72.0°F (2010) | 37.0°F (2002) | 1.61 in (2012) |
| September 14 | 73.0°F (2020) | 39.0°F (2006) | 0.79 in (2011) |
| September 15 | 73.9°F (2010) | 36.0°F (1998) | 1.17 in (2000) |
| September 16 | 77.0°F (2025) | 35.1°F (2018) | 1.57 in (2002) |
| September 17 | 72.0°F (2020) | 33.1°F (2018) | 1.48 in (2023) |
| September 18 | 69.1°F (2010) | 37.0°F (1998) | 1.74 in (2015) |
| September 19 | 70.0°F (2010) | 32.0°F (1997) | 2.44 in (2013) |
| September 20 | 73.0°F (2012) | 27.0°F (1997) | 2.44 in (2014) |
| September 21 | 70.0°F (2012) | 35.1°F (1997) | 1.81 in (2009) |
| September 22 | 62.1°F (1998) | 36.0°F (2003) | 1.54 in (1999) |
| September 23 | 62.1°F (2000) | 34.0°F (2003) | 2.20 in (2004) |
| September 24 | 66.0°F (2000) | 36.0°F (1997) | 1.57 in (2006) |
| September 25 | 64.0°F (2023) | 35.1°F (1997) | 1.28 in (2016) |
| September 26 | 70.0°F (2014) | 33.1°F (1997) | 2.40 in (2017) |
| September 27 | 66.9°F (2017) | 35.1°F (1999) | 1.69 in (2020) |
| September 28 | 71.1°F (2003) | 33.1°F (2004) | 2.61 in (2006) |
| September 29 | 78.1°F (2003) | 30.9°F (1999) | 2.17 in (2001) |
| September 30 | 75.0°F (2008) | 33.1°F (2002) | 1.15 in (1998) |