This weather has a price Keeping the median Canyon County home comfortable runs roughly $360 a year in heating and cooling alone. See where it lands in the monthly bill

30-year climate normals

Canyon County Climate and Weather Averages

Hottest month: July

89.9°

average daily high. The coldest month is December, averaging a low of 24.0°F.

Canyon County gets 10" of precipitation a year, and 34% of it falls in Nov, Dec, Jan.

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	39.8°	24.5°	1.22"
February	47.4°	27.3°	0.99"
March	58.4°	33.8°	1.10"
April	64.5°	38.4°	1.06"
May	73.1°	46.0°	1.15"
June	80.9°	52.1°	0.70"
July	89.9°	59.2°	0.29"
August	89.1°	57.0°	0.19"
September	80.0°	49.0°	0.37"
October	66.4°	39.2°	0.75"
November	50.3°	30.5°	1.07"
December	40.1°	24.0°	1.11"

Rainfall by month

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

January 1.22"

February 0.99"

March 1.10"

April 1.06"

May 1.15"

June 0.70"

July 0.29"

August 0.19"

September 0.37"

October 0.75"

November 1.07"

December 1.11"

Annual total 10"

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 771

Heating degree days How much heating the climate demands 5,288

Approximate annual cooling cost At 13.73¢/kWh, Idaho average $106

Approximate annual electric heating cost Lower where heating is gas rather than electric $254

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 Canyon County, where electricity is one line of eight.

Common questions

What is the weather like in Canyon County?

Canyon County averages a high of 89.9°F in July and a low of 24.0°F in December. Annual precipitation is 10 inches, with essentially no snow.

When is the rainy season in Canyon County?

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

How hot does it get in Canyon County?

The average daily high in July, the hottest month, is 89.9°F. That drives 771 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Canyon County?

The weather station used for Canyon County, DEER FLAT DAM, ID 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 10 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 DEER FLAT DAM, ID US (USC00102444), 3.9 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, Idaho residential average.
Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.