30-year climate normals

Stevens County Climate and Weather Averages

Hottest month — August

86.3°

average daily high. The coldest month is January, averaging a low of 20.3°F.

Stevens County gets 21.36" of precipitation a year, and 32% of it falls in Nov, Dec, Jan.

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	32.9°	20.3°	2.22"
February	39.8°	21.3°	1.85"
March	50.1°	26.8°	2.21"
April	60.2°	32.8°	1.86"
May	70.0°	40.4°	2.03"
June	75.7°	45.5°	2.05"
July	86.1°	48.8°	0.99"
August	86.3°	46.6°	0.72"
September	76.0°	39.0°	0.95"
October	59.3°	30.7°	1.78"
November	42.1°	26.1°	2.37"
December	33.0°	20.6°	2.33"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 32% falling in the wettest three months (Nov, Dec, Jan).

January 2.22"

February 1.85"

March 2.21"

April 1.86"

May 2.03"

June 2.05"

July 0.99"

August 0.72"

September 0.95"

October 1.78"

November 2.37"

December 2.33"

Annual total 21.36"

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 261

Heating degree days How much heating the climate demands 7,065

Approximate annual cooling cost At 14.95¢/kWh, Washington average $39

Approximate annual electric heating cost Lower where heating is gas rather than electric $370

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 Stevens County, where electricity is one line of eight.

Common questions

What is the weather like in Stevens County?

Stevens County averages a high of 86.3°F in August and a low of 20.3°F in January. Annual precipitation is 21.36 inches, with essentially no snow.

When is the rainy season in Stevens County?

The wettest stretch is Nov, Dec, Jan, which accounts for 32% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Stevens County?

The average daily high in August, the hottest month, is 86.3°F. That drives 261 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Stevens County?

Effectively no. Measurable snowfall is rare in Stevens County.

Sources

Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station CHEWELAH, WA US (USC00451395), 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, Washington residential average.
Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.