30-year climate normals

Davison County Climate and Weather Averages

Hottest month — July

86.7°

average daily high. The coldest month is January, averaging a low of 9.3°F.

Davison County gets 21.14" of precipitation a year, and 43% 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	28.6°	9.3°	0.40"
February	32.7°	13.4°	0.37"
March	45.4°	24.3°	0.93"
April	58.7°	35.1°	2.07"
May	70.8°	47.8°	3.15"
June	81.2°	58.5°	3.51"
July	86.7°	63.9°	2.36"
August	83.9°	60.5°	3.14"
September	76.8°	51.0°	2.34"
October	61.7°	37.8°	1.83"
November	45.6°	24.2°	0.55"
December	31.9°	14.1°	0.49"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 43% falling in the wettest three months (May, Jun, Jul).

January 0.40"

February 0.37"

March 0.93"

April 2.07"

May 3.15"

June 3.51"

July 2.36"

August 3.14"

September 2.34"

October 1.83"

November 0.55"

December 0.49"

Annual total 21.14"

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 880

Heating degree days How much heating the climate demands 7,159

Approximate annual cooling cost At 15.73¢/kWh, South Dakota average $138

Approximate annual electric heating cost Lower where heating is gas rather than electric $394

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 Davison County, where electricity is one line of eight.

Common questions

What is the weather like in Davison County?

Davison County averages a high of 86.7°F in July and a low of 9.3°F in January. Annual precipitation is 21.14 inches, with essentially no snow.

When is the rainy season in Davison County?

The wettest stretch is May, Jun, Jul, which accounts for 43% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Davison County?

The average daily high in July, the hottest month, is 86.7°F. That drives 880 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Davison County?

Effectively no. Measurable snowfall is rare in Davison County.

Sources

Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station MITCHELL MUNI AP, SD US (USW00094950), 8.5 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, South Dakota residential average.
Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.