This weather has a price Keeping the median Oliver County home comfortable runs roughly $488 a year in heating and cooling alone. See where it lands in the monthly bill

30-year climate normals

Oliver County Climate and Weather Averages

Hottest month: July

81.6°

average daily high. The coldest month is January, averaging a low of 4.6°F.

Oliver County gets 18.95" of precipitation a year, and 48% of it falls in May, Jun, Jul.

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	22.9°	4.6°	0.51"
February	26.8°	8.9°	0.51"
March	39.2°	19.6°	0.85"
April	53.9°	32.8°	1.41"
May	65.8°	43.3°	2.78"
June	75.1°	53.3°	3.46"
July	81.6°	57.8°	2.77"
August	81.0°	55.7°	2.01"
September	70.8°	46.4°	2.08"
October	54.7°	33.5°	1.40"
November	38.4°	19.5°	0.66"
December	26.4°	9.4°	0.51"

Rainfall by month

Oliver County has a distinct wet season. 48% of the year's precipitation arrives in May, Jun, Jul.

January 0.51"

February 0.51"

March 0.85"

April 1.41"

May 2.78"

June 3.46"

July 2.77"

August 2.01"

September 2.08"

October 1.40"

November 0.66"

December 0.51"

Annual total 18.95"

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 447

Heating degree days How much heating the climate demands 8,589

Approximate annual cooling cost At 14.12¢/kWh, North Dakota average $63

Approximate annual electric heating cost Lower where heating is gas rather than electric $424

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 Oliver County, where electricity is one line of eight.

Common questions

What is the weather like in Oliver County?

Oliver County averages a high of 81.6°F in July and a low of 4.6°F in January. Annual precipitation is 18.95 inches, with essentially no snow.

When is the rainy season in Oliver County?

The wettest stretch is May, Jun, Jul, 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 Oliver County?

The average daily high in July, the hottest month, is 81.6°F. That drives 447 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Oliver County?

The weather station used for Oliver County, CENTER 4SE, ND US, reports temperature and precipitation but not snowfall, so there is no snow normal to quote here. Precipitation that falls as snow is still counted in the 18.95 inches above, measured as melted water.

Sources

Temperature, precipitation and snowfall normals: NOAA National Centers for Environmental Information, 1991 to 2020 Monthly Climate Normals, station CENTER 4SE, ND US (USC00321456), 6.7 miles from the county centroid.
Heating and cooling degree days: NOAA, same station and period.
Annual figures on this page are the sum of that station's twelve monthly normals. NOAA also publishes a separately-computed annual normal, which can differ from the monthly sum by a few percent; we use the monthly series because the month-by-month breakdown above has to come from it.
Electricity price: US Energy Information Administration, Electric Power Monthly Table 5.6.A, North Dakota residential average.
Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.