30-year climate normals

Coconino County Climate and Weather Averages

Hottest month — July

84.9°

average daily high. The coldest month is December, averaging a low of 14.1°F.

Coconino County gets 13.36" of precipitation a year, and 38% of it falls in Jul, Aug, Sep.

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	43.9°	15.8°	1.23"
February	46.9°	17.2°	1.21"
March	54.5°	22.0°	1.20"
April	61.2°	25.3°	0.69"
May	70.7°	31.6°	0.61"
June	82.5°	38.0°	0.40"
July	84.9°	49.0°	1.66"
August	82.8°	49.4°	2.06"
September	76.9°	40.4°	1.37"
October	65.6°	30.0°	1.34"
November	53.8°	20.8°	0.77"
December	44.2°	14.1°	0.82"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 38% falling in the wettest three months (Jul, Aug, Sep).

January 1.23"

February 1.21"

March 1.20"

April 0.69"

May 0.61"

June 0.40"

July 1.66"

August 2.06"

September 1.37"

October 1.34"

November 0.77"

December 0.82"

Annual total 13.36"

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 162

Heating degree days How much heating the climate demands 6,799

Approximate annual cooling cost At 15.23¢/kWh, Arizona average $25

Approximate annual electric heating cost Lower where heating is gas rather than electric $362

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 Coconino County, where electricity is one line of eight.

Common questions

What is the weather like in Coconino County?

Coconino County averages a high of 84.9°F in July and a low of 14.1°F in December. Annual precipitation is 13.36 inches, with essentially no snow.

When is the rainy season in Coconino County?

The wettest stretch is Jul, Aug, Sep, which accounts for 38% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Coconino County?

The average daily high in July, the hottest month, is 84.9°F. That drives 162 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Coconino County?

Effectively no. Measurable snowfall is rare in Coconino County.

Sources

Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station GRAND CANYON NP AP, AZ US (USW00003195), 22.8 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, Arizona residential average.
Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.