Port Alexander weather by month
What a typical year looks like in Port Alexander, Alaska: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Little Port Walter, 16 km from Port Alexander; records cover 1936–2025.
The year at a glance
- Precipitation a year
- 245.7 in6241 mm
- Snow a year
- 102 in259 cm
- Last spring freeze
- Apr 27
- First fall freeze
- Oct 26
- Heating degree days
- 7,601
- Cooling degree days
- 0
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 17°−8° (heating, 99%) and 71°22° (cooling, 1%).
Month by month
Port Alexander in January
Highs average 38°3° and lows 31°−1°, with 28 in710 mm of precipitation and 28 in71 cm of snow in a typical January.
- Record high
- 59°15° (1989)
- Record low
- 0°−18° (1966)
- Heating degree days
- 949
- Cooling degree days
- 0
Port Alexander in February
Highs average 39°4° and lows 31°0°, with 18.9 in481 mm of precipitation and 20 in50 cm of snow in a typical February.
- Record high
- 58°14° (1995)
- Record low
- 3°−16° (1968)
- Heating degree days
- 837
- Cooling degree days
- 0
Port Alexander in March
Highs average 41°5° and lows 32°0°, with 18.1 in460 mm of precipitation and 20 in51 cm of snow in a typical March.
- Record high
- 58°14° (2019)
- Record low
- 5°−15° (1955)
- Heating degree days
- 888
- Cooling degree days
- 0
Port Alexander in April
Highs average 47°8° and lows 36°2°, with 14.7 in372 mm of precipitation and 1.7 in4.3 cm of snow in a typical April.
- Record high
- 67°19° (2003)
- Record low
- 18°−8° (1966)
- Heating degree days
- 712
- Cooling degree days
- 0
Port Alexander in May
Highs average 54°12° and lows 41°5°, with 12.2 in311 mm of precipitation in a typical May.
- Record high
- 72°22° (1947)
- Record low
- 24°−4° (1950)
- Heating degree days
- 549
- Cooling degree days
- 0
Port Alexander in June
Highs average 58°15° and lows 46°8°, with 7.9 in199 mm of precipitation in a typical June.
- Record high
- 80°27° (1980)
- Record low
- 32°0° (1955)
- Heating degree days
- 380
- Cooling degree days
- 0
Port Alexander in July
Highs average 61°16° and lows 50°10°, with 10.4 in263 mm of precipitation in a typical July.
- Record high
- 79°26° (1993)
- Record low
- 34°1° (2019)
- Heating degree days
- 284
- Cooling degree days
- 0
Port Alexander in August
Highs average 61°16° and lows 51°10°, with 16.7 in425 mm of precipitation in a typical August.
- Record high
- 88°31° (1990)
- Record low
- 35°2° (1948)
- Heating degree days
- 282
- Cooling degree days
- 0
Port Alexander in September
Highs average 56°13° and lows 47°8°, with 25.7 in653 mm of precipitation in a typical September.
- Record high
- 73°23° (1993)
- Record low
- 26°−3° (2019)
- Heating degree days
- 401
- Cooling degree days
- 0
Port Alexander in OctoberThis month
Highs average 49°10° and lows 41°5°, with 31.6 in803 mm of precipitation and 0.4 in1 cm of snow in a typical October.
- Record high
- 61°16° (1976)
- Record low
- 23°−5° (1984)
- Heating degree days
- 620
- Cooling degree days
- 0
Port Alexander in November
Highs average 43°6° and lows 35°2°, with 29.4 in747 mm of precipitation and 10 in26 cm of snow in a typical November.
- Record high
- 57°14° (1969)
- Record low
- 4°−16° (1985)
- Heating degree days
- 788
- Cooling degree days
- 0
Port Alexander in December
Highs average 39°4° and lows 32°0°, with 32.2 in817 mm of precipitation and 22 in55 cm of snow in a typical December.
- Record high
- 55°13° (2014)
- Record low
- 4°−16° (1964)
- Heating degree days
- 911
- Cooling degree days
- 0