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United States › Montana › Sanders County › Climate Station LIBBY 32 SSE, MT US Distance 14 mi Normals 1991–2020

30-year climate normals

Sanders County Climate and Weather Averages

Hottest month — July

77.9°

average daily high. The coldest month is January, averaging a low of 14.9°F.

Sanders County gets 22.31" of precipitation a year and 92.7" of snow, and 34% of it falls in Oct, Nov, Dec.

Temperature through the year

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

20° 40° 60° JanFebMarAprMayJunJulAugSepOctNovDec
MonthAvg highAvg low PrecipSnow
January 30.4° 14.9° 2.12" 17.7"
February 34.7° 15.1° 1.84" 14.2"
March 43.0° 21.9° 2.17" 14.6"
April 52.5° 27.7° 1.62" 5.2"
May 62.4° 34.3° 2.09" 0.5"
June 68.5° 39.5° 1.98" 0.2"
July 77.9° 41.7° 0.78" 0.0"
August 77.8° 39.5° 0.84" 0.0"
September 67.4° 33.8° 1.19" 0.0"
October 51.8° 27.3° 2.15" 3.0"
November 36.9° 22.0° 2.94" 15.4"
December 28.8° 15.3° 2.59" 21.9"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 34% falling in the wettest three months (Oct, Nov, Dec).

January 2.12"
February 1.84"
March 2.17"
April 1.62"
May 2.09"
June 1.98"
July 0.78"
August 0.84"
September 1.19"
October 2.15"
November 2.94"
December 2.59"
Annual total 22.31"

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 27
Heating degree days How much heating the climate demands 9,042
Approximate annual cooling cost At 14.67¢/kWh, Montana average $4
Approximate annual electric heating cost Lower where heating is gas rather than electric $464

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 Sanders County, where electricity is one line of eight.

Common questions

What is the weather like in Sanders County?

Sanders County averages a high of 77.9°F in July and a low of 14.9°F in January. Annual precipitation is 22.31 inches, including 92.7 inches of snow.

When is the rainy season in Sanders County?

The wettest stretch is Oct, Nov, Dec, which accounts for 34% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Sanders County?

The average daily high in July, the hottest month, is 77.9°F. That drives 27 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Sanders County?

Yes. Sanders County averages 92.7 inches of snow a year.

Sources

  • Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station LIBBY 32 SSE, MT US (USC00245020), 14 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.