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United States › Montana › Chouteau County › Climate Station LOMA, MT US Distance 4.6 mi Normals 1991–2020

30-year climate normals

Chouteau County Climate and Weather Averages

Hottest month — July

87.6°

average daily high. The coldest month is January, averaging a low of 7.2°F.

Chouteau County gets 12.79" of precipitation a year and 36.3" of snow, and 46% 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 34.1° 7.2° 0.53" 8.4"
February 38.3° 10.2° 0.37" 5.4"
March 48.7° 19.5° 0.50" 5.0"
April 59.4° 29.9° 1.37" 1.9"
May 69.0° 39.2° 2.01" 0.8"
June 77.2° 47.6° 2.53" 0.0"
July 87.6° 52.7° 1.19" 0.0"
August 86.5° 50.5° 1.17" 0.0"
September 75.6° 41.2° 1.12" 0.0"
October 60.7° 29.5° 0.99" 1.6"
November 46.2° 18.7° 0.61" 6.1"
December 36.3° 9.5° 0.40" 7.1"

Rainfall by month

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

January 0.53"
February 0.37"
March 0.50"
April 1.37"
May 2.01"
June 2.53"
July 1.19"
August 1.17"
September 1.12"
October 0.99"
November 0.61"
December 0.40"
Annual total 12.79"

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 413
Heating degree days How much heating the climate demands 7,741
Approximate annual cooling cost At 14.67¢/kWh, Montana average $61
Approximate annual electric heating cost Lower where heating is gas rather than electric $397

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 Chouteau County, where electricity is one line of eight.

Common questions

What is the weather like in Chouteau County?

Chouteau County averages a high of 87.6°F in July and a low of 7.2°F in January. Annual precipitation is 12.79 inches, including 36.3 inches of snow.

When is the rainy season in Chouteau County?

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

The average daily high in July, the hottest month, is 87.6°F. That drives 413 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Chouteau County?

Yes. Chouteau County averages 36.3 inches of snow a year.

Sources

  • Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station LOMA, MT US (USC00245153), 4.6 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.