Cost to Own
United States › Montana › Musselshell County › Climate Station ROUNDUP, MT US Distance 6.4 mi Normals 1991 to 2020
This weather has a price Keeping the median Musselshell County home comfortable runs roughly $467 a year in heating and cooling alone. See where it lands in the monthly bill

30-year climate normals

Musselshell County Climate and Weather Averages

Hottest month: July

88.9°

average daily high. The coldest month is January, averaging a low of 13.1°F.

Musselshell County gets 14.88" of precipitation a year and 24.4" of snow, and 48% of it falls in Apr, May, Jun.

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 37.2° 13.1° 0.37" 5.2"
February 40.7° 14.9° 0.42" 3.9"
March 50.6° 22.1° 0.71" 4.4"
April 59.9° 30.0° 1.71" 1.4"
May 69.1° 39.3° 2.55" 0.1"
June 78.3° 47.8° 2.89" 0.0"
July 88.9° 53.5° 1.70" 0.0"
August 87.9° 51.1° 1.21" 0.0"
September 76.9° 42.4° 1.20" 0.0"
October 60.9° 31.7° 1.22" 1.0"
November 46.6° 21.8° 0.49" 2.8"
December 37.2° 14.2° 0.41" 5.6"

Rainfall by month

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

January 0.37"
February 0.42"
March 0.71"
April 1.71"
May 2.55"
June 2.89"
July 1.70"
August 1.21"
September 1.20"
October 1.22"
November 0.49"
December 0.41"
Annual total 14.88"

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 482
Heating degree days How much heating the climate demands 7,193
Approximate annual cooling cost At 15.57¢/kWh, Montana average $75
Approximate annual electric heating cost Lower where heating is gas rather than electric $392

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 Musselshell County, where electricity is one line of eight.

Common questions

What is the weather like in Musselshell County?

Musselshell County averages a high of 88.9°F in July and a low of 13.1°F in January. Annual precipitation is 14.88 inches, including 24.4 inches of snow.

When is the rainy season in Musselshell County?

The wettest stretch is Apr, May, Jun, 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 Musselshell County?

The average daily high in July, the hottest month, is 88.9°F. That drives 482 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Musselshell County?

Yes. Musselshell County averages 24.4 inches of snow a year.

Sources

  • Temperature, precipitation and snowfall normals: NOAA National Centers for Environmental Information, 1991 to 2020 Monthly Climate Normals, station ROUNDUP, MT US (USC00247214), 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, Montana residential average.
  • Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.