30-year climate normals

Toole County Climate and Weather Averages

Hottest month — July

82.2°

average daily high. The coldest month is January, averaging a low of 6.1°F.

Toole County gets 12.13" of precipitation a year and 38.9" of snow, and 49% 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	Snow
January	31.4°	6.1°	0.46"	7.3"
February	35.3°	9.9°	0.36"	5.8"
March	43.9°	18.4°	0.63"	6.9"
April	54.2°	28.4°	1.34"	4.1"
May	64.4°	38.0°	1.77"	1.9"
June	72.6°	46.0°	2.85"	0.0"
July	82.2°	51.5°	1.14"	0.0"
August	82.2°	49.3°	0.85"	0.0"
September	70.9°	40.5°	1.01"	0.5"
October	56.2°	29.0°	0.74"	1.4"
November	42.0°	17.6°	0.52"	5.5"
December	33.1°	9.1°	0.46"	5.5"

Rainfall by month

Toole County has a distinct wet season. 49% of the year's precipitation arrives in Apr, May, Jun.

January 0.46"

February 0.36"

March 0.63"

April 1.34"

May 1.77"

June 2.85"

July 1.14"

August 0.85"

September 1.01"

October 0.74"

November 0.52"

December 0.46"

Annual total 12.13"

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 242

Heating degree days How much heating the climate demands 8,532

Approximate annual cooling cost At 14.67¢/kWh, Montana average $36

Approximate annual electric heating cost Lower where heating is gas rather than electric $438

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 Toole County, where electricity is one line of eight.

Common questions

What is the weather like in Toole County?

Toole County averages a high of 82.2°F in July and a low of 6.1°F in January. Annual precipitation is 12.13 inches, including 38.9 inches of snow.

When is the rainy season in Toole County?

The wettest stretch is Apr, May, Jun, which accounts for 49% 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 Toole County?

The average daily high in July, the hottest month, is 82.2°F. That drives 242 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Toole County?

Yes. Toole County averages 38.9 inches of snow a year.

Sources

Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station SHELBY, MT US (USC00247500), 10.7 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.