30-year climate normals

Sitka City and Borough Climate and Weather Averages

Hottest month — August

61.8°

average daily high. The coldest month is January, averaging a low of 29.2°F.

Sitka City and Borough gets 102.06" of precipitation a year, and 40% of it falls in Sep, Oct, Nov.

Temperature through the year

Each bar spans the average daily low to the average daily high for that month.

Month	Avg high	Avg low	Precip
January	37.1°	29.2°	9.58"
February	39.0°	29.5°	6.48"
March	41.6°	29.9°	6.43"
April	48.7°	33.9°	5.01"
May	54.3°	39.2°	4.05"
June	58.1°	45.1°	3.63"
July	60.4°	49.8°	5.53"
August	61.8°	49.6°	9.61"
September	57.3°	45.4°	13.78"
October	49.1°	38.8°	14.79"
November	41.5°	32.7°	12.14"
December	37.9°	30.2°	11.03"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 40% falling in the wettest three months (Sep, Oct, Nov).

January 9.58"

February 6.48"

March 6.43"

April 5.01"

May 4.05"

June 3.63"

July 5.53"

August 9.61"

September 13.78"

October 14.79"

November 12.14"

December 11.03"

Annual total 102.06"

What this climate costs you

Degree days measure how hard a building has to work to stay comfortable. They are the reason two identical houses have very different power bills, and they are the link between the weather here and what you pay every month.

Cooling degree days How much air conditioning the climate demands 0

Heating degree days How much heating the climate demands 7,888

Approximate annual cooling cost At 28.23¢/kWh, Alaska average $0

Approximate annual electric heating cost Lower where heating is gas rather than electric $779

These are rough planning figures from degree days and the state electricity price, not a bill estimate. House size, insulation and fuel type move them a lot. See the full cost of owning a home in Sitka City and Borough, where electricity is one line of eight.

Common questions

What is the weather like in Sitka City and Borough?

Sitka City and Borough averages a high of 61.8°F in August and a low of 29.2°F in January. Annual precipitation is 102.06 inches, with essentially no snow.

When is the rainy season in Sitka City and Borough?

The wettest stretch is Sep, Oct, Nov, which accounts for 40% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Sitka City and Borough?

The average daily high in August, the hottest month, is 61.8°F. That drives 0 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Sitka City and Borough?

Effectively no. Measurable snowfall is rare in Sitka City and Borough.

Sources

Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station SITKA 1 NE, AK US (USW00025379), 9.5 miles from the county centroid.
Heating and cooling degree days — NOAA, same station and period.
Electricity price — US Energy Information Administration, Electric Power Monthly Table 5.6.A, Alaska residential average.
Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.