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United States › Montana › Wheatland County › Climate Station HARLOWTON, MT US Distance 4.3 mi Normals 1991–2020

30-year climate normals

Wheatland County Climate and Weather Averages

Hottest month — July

83.9°

average daily high. The coldest month is January, averaging a low of 13.3°F.

Wheatland County gets 13.18" of precipitation a year and 19.6" of snow, and 51% 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.

20° 40° 60° 80° JanFebMarAprMayJunJulAugSepOctNovDec
MonthAvg highAvg low PrecipSnow
January 35.7° 13.3° 0.31" 3.7"
February 38.2° 14.1° 0.30" 1.9"
March 47.5° 19.8° 0.55" 2.6"
April 54.3° 27.8° 1.34" 3.1"
May 64.3° 37.1° 2.53" 0.3"
June 73.6° 45.5° 2.81" 0.0"
July 83.9° 49.9° 1.42" 0.0"
August 83.2° 48.4° 1.25" 0.0"
September 72.5° 39.6° 1.07" 0.1"
October 57.4° 29.5° 0.68" 0.6"
November 44.6° 20.6° 0.51" 3.6"
December 35.4° 14.7° 0.41" 3.7"

Rainfall by month

Wheatland County has a distinct wet season. 51% of the year's precipitation arrives in May, Jun, Jul.

January 0.31"
February 0.30"
March 0.55"
April 1.34"
May 2.53"
June 2.81"
July 1.42"
August 1.25"
September 1.07"
October 0.68"
November 0.51"
December 0.41"
Annual total 13.18"

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 231
Heating degree days How much heating the climate demands 7,934
Approximate annual cooling cost At 14.67¢/kWh, Montana average $34
Approximate annual electric heating cost Lower where heating is gas rather than electric $407

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 Wheatland County, where electricity is one line of eight.

Common questions

What is the weather like in Wheatland County?

Wheatland County averages a high of 83.9°F in July and a low of 13.3°F in January. Annual precipitation is 13.18 inches, including 19.6 inches of snow.

When is the rainy season in Wheatland County?

The wettest stretch is May, Jun, Jul, which accounts for 51% 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 Wheatland County?

The average daily high in July, the hottest month, is 83.9°F. That drives 231 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Wheatland County?

Yes. Wheatland County averages 19.6 inches of snow a year.

Sources

  • Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station HARLOWTON, MT US (USC00243939), 4.3 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, Montana residential average.
  • Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.