September weather in Kachemak, AK
The average temperature in Kachemak in September is 49.5°F (42.3°F–56.7°F). Average precipitation: 3.28 inches.
September is a fall month in Kachemak, and is warmer than the annual average of 40°F. Daily temperatures swing about 14.4°F between overnight low and afternoon high. Expect about 17 days with precipitation. Daylight averages about 12h 30m. For travel, September is a comfortable month to visit.
Avg High
56.7°F
Avg Low
42.3°F
Precipitation
3.28 in
Daylight
12h 30m
September records in Kachemak
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 68.0°F (1942) | 30.9°F (1943) | 0.65 in (2008) |
| September 2 | 68.0°F (1996) | 30.0°F (1944) | 1.43 in (1957) |
| September 3 | 66.9°F (2025) | 34.0°F (1948) | 0.52 in (2015) |
| September 4 | 66.0°F (1979) | 32.0°F (1936) | 0.62 in (2014) |
| September 5 | 68.0°F (1965) | 28.9°F (1960) | 1.49 in (1982) |
| September 6 | 66.9°F (1964) | 28.0°F (1960) | 1.20 in (1939) |
| September 7 | 64.9°F (1989) | 28.0°F (1952) | 0.75 in (1973) |
| September 8 | 66.0°F (1989) | 28.9°F (1970) | 1.50 in (1990) |
| September 9 | 64.9°F (2016) | 27.0°F (1970) | 0.99 in (2005) |
| September 10 | 66.0°F (2016) | 26.1°F (1970) | 1.05 in (1975) |
| September 11 | 69.1°F (1997) | 27.0°F (1992) | 1.25 in (1961) |
| September 12 | 66.0°F (1997) | 32.0°F (1952) | 0.99 in (1982) |
| September 13 | 64.9°F (1997) | 30.9°F (1948) | 0.88 in (1983) |
| September 14 | 66.0°F (1997) | 26.1°F (1943) | 1.47 in (1990) |
| September 15 | 64.9°F (1933) | 27.0°F (1987) | 0.84 in (1974) |
| September 16 | 63.0°F (1954) | 26.1°F (1939) | 0.85 in (2005) |
| September 17 | 63.0°F (1995) | 26.1°F (1939) | 1.13 in (1947) |
| September 18 | 62.1°F (1995) | 28.9°F (1955) | 0.94 in (1966) |
| September 19 | 61.0°F (1995) | 25.0°F (1948) | 1.48 in (1986) |
| September 20 | 63.0°F (1942) | 24.1°F (1948) | 1.07 in (1976) |
| September 21 | 73.0°F (2017) | 26.1°F (1968) | 0.54 in (1964) |
| September 22 | 63.0°F (1942) | 23.0°F (1948) | 1.03 in (1997) |
| September 23 | 64.0°F (1942) | 24.1°F (1948) | 0.83 in (2001) |
| September 24 | 63.0°F (1952) | 23.0°F (1956) | 1.12 in (2002) |
| September 25 | 62.1°F (1936) | 21.9°F (1946) | 0.57 in (1945) |
| September 26 | 60.1°F (1975) | 24.1°F (1946) | 0.81 in (1945) |
| September 27 | 60.1°F (1942) | 24.1°F (1939) | 1.47 in (2018) |
| September 28 | 60.1°F (1942) | 19.9°F (1956) | 0.57 in (2022) |
| September 29 | 59.0°F (1959) | 23.0°F (1946) | 1.20 in (2015) |
| September 30 | 62.1°F (2003) | 26.1°F (1951) | 1.33 in (2020) |