30-year climate normals

Douglas County Climate and Weather Averages

Hottest month — August

85.9°

average daily high. The coldest month is December, averaging a low of 36.8°F.

Douglas County gets 32.07" of precipitation a year, and 49% 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	50.1°	37.1°	4.82"
February	53.7°	37.6°	3.62"
March	58.7°	39.6°	3.47"
April	63.3°	42.5°	2.71"
May	71.0°	47.9°	2.09"
June	76.7°	52.5°	0.93"
July	85.8°	57.4°	0.26"
August	85.9°	57.1°	0.23"
September	80.1°	52.2°	0.85"
October	66.9°	45.2°	2.32"
November	54.2°	40.6°	4.72"
December	48.2°	36.8°	6.05"

Rainfall by month

Douglas County has a distinct wet season. 49% of the year's precipitation arrives in Nov, Dec, Jan.

January 4.82"

February 3.62"

March 3.47"

April 2.71"

May 2.09"

June 0.93"

July 0.26"

August 0.23"

September 0.85"

October 2.32"

November 4.72"

December 6.05"

Annual total 32.07"

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 607

Heating degree days How much heating the climate demands 3,913

Approximate annual cooling cost At 16.27¢/kWh, Oregon average $99

Approximate annual electric heating cost Lower where heating is gas rather than electric $223

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 Douglas County, where electricity is one line of eight.

Common questions

What is the weather like in Douglas County?

Douglas County averages a high of 85.9°F in August and a low of 36.8°F in December. Annual precipitation is 32.07 inches, with essentially no snow.

When is the rainy season in Douglas County?

The wettest stretch is Nov, Dec, Jan, which accounts for 49% 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 Douglas County?

The average daily high in August, the hottest month, is 85.9°F. That drives 607 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Douglas County?

Effectively no. Measurable snowfall is rare in Douglas County.

Sources

Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station ROSEBURG RGNL AP, OR US (USW00024231), 10.6 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, Oregon residential average.
Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.