Sitka weather by month
What a typical year looks like in Sitka, Alaska: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Sitka Airport, 16 km from Sitka; records cover 1944–2026.
The year at a glance
- Precipitation a year
- 84.5 in2146 mm
- Snow a year
- Rare
- Last spring freeze
- Apr 12
- First fall freeze
- Oct 30
- Heating degree days
- 7,123
- Cooling degree days
- 1
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 70°21° (cooling, 1%).
Month by month
Sitka in January
Highs average 41°5° and lows 32°0°, with 8.2 in209 mm of precipitation in a typical January.
- Record high
- 63°17° (2018)
- Record low
- 0°−18° (1953)
- Heating degree days
- 885
- Cooling degree days
- 0
Sitka in February
Highs average 41°5° and lows 32°0°, with 5.9 in151 mm of precipitation in a typical February.
- Record high
- 61°16° (1968)
- Record low
- −1°−18° (1948)
- Heating degree days
- 794
- Cooling degree days
- 0
Sitka in March
Highs average 43°6° and lows 33°0°, with 5.6 in142 mm of precipitation in a typical March.
- Record high
- 67°19° (2019)
- Record low
- 4°−16° (1951)
- Heating degree days
- 852
- Cooling degree days
- 0
Sitka in April
Highs average 48°9° and lows 37°3°, with 4.3 in109 mm of precipitation in a typical April.
- Record high
- 76°24° (1976)
- Record low
- 20°−7° (1948)
- Heating degree days
- 670
- Cooling degree days
- 0
Sitka in May
Highs average 53°12° and lows 43°6°, with 3.8 in97 mm of precipitation in a typical May.
- Record high
- 82°28° (1963)
- Record low
- 29°−2° (1965)
- Heating degree days
- 522
- Cooling degree days
- 0
Sitka in June
Highs average 58°14° and lows 48°9°, with 2.9 in74 mm of precipitation in a typical June.
- Record high
- 83°28° (1948)
- Record low
- 35°2° (1949)
- Heating degree days
- 362
- Cooling degree days
- 0
Sitka in July
Highs average 60°16° and lows 53°11°, with 4.6 in117 mm of precipitation in a typical July.
- Record high
- 88°31° (1976)
- Record low
- 41°5° (1945)
- Heating degree days
- 266
- Cooling degree days
- 0
Sitka in August
Highs average 62°17° and lows 53°12°, with 7.3 in184 mm of precipitation in a typical August.
- Record high
- 84°29° (1950)
- Record low
- 37°3° (1948)
- Heating degree days
- 238
- Cooling degree days
- 1
Sitka in September
Highs average 58°14° and lows 49°9°, with 11.7 in297 mm of precipitation in a typical September.
- Record high
- 77°25° (1986)
- Record low
- 31°−1° (1956)
- Heating degree days
- 354
- Cooling degree days
- 0
Sitka in OctoberThis month
Highs average 51°10° and lows 42°5°, with 11.8 in299 mm of precipitation in a typical October.
- Record high
- 70°21° (2022)
- Record low
- 20°−7° (1984)
- Heating degree days
- 578
- Cooling degree days
- 0
Sitka in November
Highs average 44°7° and lows 36°2°, with 9.9 in252 mm of precipitation in a typical November.
- Record high
- 65°18° (1970)
- Record low
- 2°−17° (1985)
- Heating degree days
- 748
- Cooling degree days
- 0
Sitka in December
Highs average 42°5° and lows 33°1°, with 8.4 in214 mm of precipitation in a typical December.
- Record high
- 65°18° (1944)
- Record low
- 1°−17° (1970)
- Heating degree days
- 854
- Cooling degree days
- 0