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United States › Oklahoma › Harper County › Climate Station BUFFALO 2 SSW, OK US Distance 1.3 mi Normals 1991–2020

30-year climate normals

Harper County Climate and Weather Averages

Hottest month — July

95.8°

average daily high. The coldest month is January, averaging a low of 21.6°F.

Harper County gets 22.13" of precipitation a year and 13.6" of snow, and 42% of it falls in Jun, Jul, Aug.

Temperature through the year

Each bar spans the average daily low to the average daily high for that month.

40° 60° 80° JanFebMarAprMayJunJulAugSepOctNovDec
MonthAvg highAvg low PrecipSnow
January 47.8° 21.6° 0.65" 2.0"
February 52.3° 24.7° 0.77" 3.4"
March 61.5° 32.3° 1.38" 1.8"
April 70.9° 42.1° 1.87" 0.1"
May 80.0° 53.4° 2.31" 0.0"
June 89.7° 64.4° 4.04" 0.0"
July 95.8° 68.9° 2.18" 0.0"
August 93.5° 66.5° 3.14" 0.0"
September 85.4° 58.6° 1.62" 0.0"
October 72.6° 44.7° 2.19" 0.0"
November 60.1° 32.1° 1.03" 2.2"
December 48.3° 22.9° 0.95" 4.1"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 42% falling in the wettest three months (Jun, Jul, Aug).

January 0.65"
February 0.77"
March 1.38"
April 1.87"
May 2.31"
June 4.04"
July 2.18"
August 3.14"
September 1.62"
October 2.19"
November 1.03"
December 0.95"
Annual total 22.13"

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 1,827
Heating degree days How much heating the climate demands 4,372
Approximate annual cooling cost At 13.38¢/kWh, Oklahoma average $244
Approximate annual electric heating cost Lower where heating is gas rather than electric $205

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 Harper County, where electricity is one line of eight.

Common questions

What is the weather like in Harper County?

Harper County averages a high of 95.8°F in July and a low of 21.6°F in January. Annual precipitation is 22.13 inches, including 13.6 inches of snow.

When is the rainy season in Harper County?

The wettest stretch is Jun, Jul, Aug, which accounts for 42% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Harper County?

The average daily high in July, the hottest month, is 95.8°F. That drives 1,827 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Harper County?

Yes. Harper County averages 13.6 inches of snow a year.

Sources

  • Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station BUFFALO 2 SSW, OK US (USC00341243), 1.3 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, Oklahoma residential average.
  • Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.