30-year climate normals

Bannock County Climate and Weather Averages

Hottest month — July

87.3°

average daily high. The coldest month is January, averaging a low of 14.6°F.

Bannock County gets 15.46" of precipitation a year and 44.7" of snow, and 31% of it falls in Dec, Jan, Feb.

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	32.2°	14.6°	1.80"	16.8"
February	37.1°	18.3°	1.32"	7.0"
March	48.8°	26.1°	1.24"	3.5"
April	58.3°	32.3°	1.19"	1.6"
May	68.0°	39.4°	2.01"	0.1"
June	77.0°	46.0°	1.17"	0.0"
July	87.3°	52.0°	0.60"	0.0"
August	85.6°	50.7°	1.04"	0.0"
September	75.9°	42.2°	1.24"	0.0"
October	61.4°	32.3°	1.15"	0.6"
November	45.6°	24.0°	0.97"	2.2"
December	33.5°	17.1°	1.73"	12.9"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 31% falling in the wettest three months (Dec, Jan, Feb).

January 1.80"

February 1.32"

March 1.24"

April 1.19"

May 2.01"

June 1.17"

July 0.60"

August 1.04"

September 1.24"

October 1.15"

November 0.97"

December 1.73"

Annual total 15.46"

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 348

Heating degree days How much heating the climate demands 7,219

Approximate annual cooling cost At 12.35¢/kWh, Idaho average $43

Approximate annual electric heating cost Lower where heating is gas rather than electric $312

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 Bannock County, where electricity is one line of eight.

Common questions

What is the weather like in Bannock County?

Bannock County averages a high of 87.3°F in July and a low of 14.6°F in January. Annual precipitation is 15.46 inches, including 44.7 inches of snow.

When is the rainy season in Bannock County?

The wettest stretch is Dec, Jan, Feb, which accounts for 31% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Bannock County?

The average daily high in July, the hottest month, is 87.3°F. That drives 348 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Bannock County?

Yes. Bannock County averages 44.7 inches of snow a year.

Sources

Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station MCCAMMON, ID US (USC00105716), 3.3 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, Idaho residential average.
Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.