South Naknek weather by month
What a typical year looks like in South Naknek, Alaska: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at King Salmon Airport, 19 km from South Naknek; records cover 1917–2026.
The year at a glance
- Precipitation a year
- 21.4 in545 mm
- Snow a year
- 47 in120 cm
- Last spring freeze
- Jun 2
- First fall freeze
- Sep 3
- Heating degree days
- 10,384
- Cooling degree days
- 3
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −27°−33° (heating, 99%) and 77°25° (cooling, 1%).
Month by month
South Naknek in January
Highs average 24°−5° and lows 10°−12°, with 0.93 in24 mm of precipitation and 9 in22 cm of snow in a typical January.
- Record high
- 53°12° (1963)
- Record low
- −48°−44° (1989)
- Heating degree days
- 1499
- Cooling degree days
- 0
South Naknek in February
Highs average 30°−1° and lows 15°−10°, with 0.91 in23 mm of precipitation and 7 in18 cm of snow in a typical February.
- Record high
- 57°14° (1991)
- Record low
- −43°−42° (2006)
- Heating degree days
- 1201
- Cooling degree days
- 0
South Naknek in March
Highs average 32°0° and lows 15°−9°, with 0.76 in19 mm of precipitation and 7 in18 cm of snow in a typical March.
- Record high
- 59°15° (1934)
- Record low
- −42°−41° (1971)
- Heating degree days
- 1286
- Cooling degree days
- 0
South Naknek in April
Highs average 45°7° and lows 28°−2°, with 1 in26 mm of precipitation and 4 in11 cm of snow in a typical April.
- Record high
- 69°21° (2005)
- Record low
- −19°−28° (1956)
- Heating degree days
- 868
- Cooling degree days
- 0
South Naknek in May
Highs average 55°13° and lows 36°2°, with 1.4 in37 mm of precipitation and 0.6 in1.5 cm of snow in a typical May.
- Record high
- 85°29° (2006)
- Record low
- 4°−16° (1945)
- Heating degree days
- 600
- Cooling degree days
- 0
South Naknek in June
Highs average 62°17° and lows 44°6°, with 1.8 in46 mm of precipitation in a typical June.
- Record high
- 88°31° (1953)
- Record low
- 27°−3° (2006)
- Heating degree days
- 366
- Cooling degree days
- 0
South Naknek in July
Highs average 65°18° and lows 49°9°, with 2.5 in62 mm of precipitation in a typical July.
- Record high
- 89°32° (2019)
- Record low
- 31°−1° (2013)
- Heating degree days
- 258
- Cooling degree days
- 2
South Naknek in August
Highs average 63°17° and lows 48°9°, with 3.3 in83 mm of precipitation in a typical August.
- Record high
- 84°29° (1968)
- Record low
- 25°−4° (1984)
- Heating degree days
- 291
- Cooling degree days
- 1
South Naknek in September
Highs average 56°13° and lows 41°5°, with 3.4 in86 mm of precipitation in a typical September.
- Record high
- 76°24° (2018)
- Record low
- 13°−11° (2021)
- Heating degree days
- 490
- Cooling degree days
- 0
South Naknek in OctoberThis month
Highs average 44°7° and lows 29°−2°, with 2.3 in59 mm of precipitation and 2.5 in6.4 cm of snow in a typical October.
- Record high
- 67°19° (1954)
- Record low
- −12°−24° (1983)
- Heating degree days
- 887
- Cooling degree days
- 0
South Naknek in November
Highs average 32°0° and lows 18°−8°, with 1.7 in44 mm of precipitation and 7 in17 cm of snow in a typical November.
- Record high
- 56°13° (1986)
- Record low
- −28°−33° (1917)
- Heating degree days
- 1198
- Cooling degree days
- 0
South Naknek in December
Highs average 26°−4° and lows 11°−11°, with 1.4 in35 mm of precipitation and 10 in26 cm of snow in a typical December.
- Record high
- 54°12° (2013)
- Record low
- −38°−39° (1942)
- Heating degree days
- 1440
- Cooling degree days
- 0