30-year climate normals

Kenai Peninsula Borough Climate and Weather Averages

Hottest month — July

63.3°

average daily high. The coldest month is January, averaging a low of 7.4°F.

Kenai Peninsula Borough gets 18.27" of precipitation a year, and 48% of it falls in Aug, Sep, Oct.

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	22.4°	7.4°	0.89"
February	28.1°	11.6°	0.83"
March	32.7°	14.4°	0.64"
April	44.3°	27.7°	0.58"
May	54.5°	36.4°	0.79"
June	60.2°	44.0°	1.20"
July	63.3°	48.8°	1.98"
August	62.7°	46.8°	2.68"
September	55.7°	39.8°	3.57"
October	43.1°	28.6°	2.56"
November	30.2°	16.1°	1.41"
December	25.1°	11.0°	1.14"

Rainfall by month

Kenai Peninsula Borough has a distinct wet season. 48% of the year's precipitation arrives in Aug, Sep, Oct.

January 0.89"

February 0.83"

March 0.64"

April 0.58"

May 0.79"

June 1.20"

July 1.98"

August 2.68"

September 3.57"

October 2.56"

November 1.41"

December 1.14"

Annual total 18.27"

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 1

Heating degree days How much heating the climate demands 10,693

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

Approximate annual electric heating cost Lower where heating is gas rather than electric $1,057

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 Kenai Peninsula Borough, where electricity is one line of eight.

Common questions

What is the weather like in Kenai Peninsula Borough?

Kenai Peninsula Borough averages a high of 63.3°F in July and a low of 7.4°F in January. Annual precipitation is 18.27 inches, with essentially no snow.

When is the rainy season in Kenai Peninsula Borough?

The wettest stretch is Aug, Sep, Oct, which accounts for 48% of the year's precipitation. That is a pronounced wet season rather than rain spread evenly through the year.

How hot does it get in Kenai Peninsula Borough?

The average daily high in July, the hottest month, is 63.3°F. That drives 1 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Kenai Peninsula Borough?

Effectively no. Measurable snowfall is rare in Kenai Peninsula Borough.

Sources

Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station KENAI MUNI AP, AK US (USW00026523), 39.7 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.