This weather has a price Keeping the median McPherson County home comfortable runs roughly $532 a year in heating and cooling alone. See where it lands in the monthly bill

30-year climate normals

McPherson County Climate and Weather Averages

Hottest month: July

80.8°

average daily high. The coldest month is January, averaging a low of 3.5°F.

McPherson County gets 19.88" of precipitation a year, and 46% 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	20.8°	3.5°	0.50"
February	24.3°	6.5°	0.52"
March	37.8°	17.8°	1.40"
April	53.4°	30.8°	1.65"
May	66.2°	42.7°	2.92"
June	74.6°	53.3°	3.30"
July	80.8°	58.3°	2.96"
August	79.4°	56.3°	2.06"
September	71.0°	47.1°	2.00"
October	54.9°	33.3°	1.57"
November	38.5°	20.2°	0.45"
December	25.3°	9.2°	0.55"

Rainfall by month

McPherson County has a distinct wet season. 46% of the year's precipitation arrives in May, Jun, Jul.

January 0.50"

February 0.52"

March 1.40"

April 1.65"

May 2.92"

June 3.30"

July 2.96"

August 2.06"

September 2.00"

October 1.57"

November 0.45"

December 0.55"

Annual total 19.88"

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 395

Heating degree days How much heating the climate demands 8,768

Approximate annual cooling cost At 15.36¢/kWh, South Dakota average $61

Approximate annual electric heating cost Lower where heating is gas rather than electric $471

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 McPherson County, where electricity is one line of eight.

Common questions

What is the weather like in McPherson County?

McPherson County averages a high of 80.8°F in July and a low of 3.5°F in January. Annual precipitation is 19.88 inches, with essentially no snow.

When is the rainy season in McPherson County?

The wettest stretch is May, Jun, Jul, which accounts for 46% 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 McPherson County?

The average daily high in July, the hottest month, is 80.8°F. That drives 395 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in McPherson County?

The weather station used for McPherson County, ABERDEEN 35 WNW, SD 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 19.88 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 ABERDEEN 35 WNW, SD US (USW00054933), 6.4 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, South Dakota residential average.
Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.