This weather has a price Keeping the median Granite County home comfortable runs roughly $468 a year in heating and cooling alone. See where it lands in the monthly bill

30-year climate normals

Granite County Climate and Weather Averages

Hottest month: July

80.8°

average daily high. The coldest month is December, averaging a low of 14.3°F.

Granite County gets 16.49" of precipitation a year, and 41% 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.

Month	Avg high	Avg low	Precip
January	35.7°	15.2°	0.67"
February	37.5°	14.8°	0.85"
March	46.6°	21.1°	1.10"
April	53.8°	26.0°	1.62"
May	63.3°	32.9°	2.64"
June	70.9°	39.5°	2.49"
July	80.8°	43.4°	1.22"
August	80.8°	41.6°	1.13"
September	71.2°	35.5°	1.44"
October	57.1°	28.0°	1.42"
November	43.1°	20.5°	1.15"
December	34.3°	14.3°	0.76"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 41% falling in the wettest three months (Apr, May, Jun).

January 0.67"

February 0.85"

March 1.10"

April 1.62"

May 2.64"

June 2.49"

July 1.22"

August 1.13"

September 1.44"

October 1.42"

November 1.15"

December 0.76"

Annual total 16.49"

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 60

Heating degree days How much heating the climate demands 8,422

Approximate annual cooling cost At 15.57¢/kWh, Montana average $9

Approximate annual electric heating cost Lower where heating is gas rather than electric $459

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 Granite County, where electricity is one line of eight.

Common questions

What is the weather like in Granite County?

Granite County averages a high of 80.8°F in July and a low of 14.3°F in December. Annual precipitation is 16.49 inches, with essentially no snow.

When is the rainy season in Granite County?

The wettest stretch is Apr, May, Jun, which accounts for 41% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Granite County?

The average daily high in July, the hottest month, is 80.8°F. That drives 60 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Granite County?

The weather station used for Granite County, PHILLIPSBURG RS, MT US, reports temperature and precipitation but not snowfall, so there is no snow normal to quote here. Precipitation that falls as snow is still counted in the 16.49 inches above, measured as melted water.

Sources

Temperature, precipitation and snowfall normals: NOAA National Centers for Environmental Information, 1991 to 2020 Monthly Climate Normals, station PHILLIPSBURG RS, MT US (USC00246472), 8.2 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.