30-year climate normals

Teton County Climate and Weather Averages

Hottest month — July

76.9°

average daily high. The coldest month is January, averaging a low of 0.6°F.

Teton County gets 32.82" of precipitation a year and 293.6" of snow, and 35% 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	Snow
January	26.0°	0.6°	3.88"	65.0"
February	30.1°	2.7°	3.07"	50.2"
March	38.8°	11.0°	3.02"	31.0"
April	45.5°	20.4°	2.81"	25.9"
May	56.4°	28.0°	2.78"	5.0"
June	66.4°	34.2°	2.44"	0.3"
July	76.9°	37.9°	1.41"	0.0"
August	76.3°	35.1°	1.60"	0.0"
September	66.0°	28.0°	1.87"	0.2"
October	50.7°	20.8°	2.27"	8.9"
November	35.3°	10.8°	3.46"	42.4"
December	25.4°	1.6°	4.21"	64.7"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 35% falling in the wettest three months (Nov, Dec, Jan).

January 3.88"

February 3.07"

March 3.02"

April 2.81"

May 2.78"

June 2.44"

July 1.41"

August 1.60"

September 1.87"

October 2.27"

November 3.46"

December 4.21"

Annual total 32.82"

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 7

Heating degree days How much heating the climate demands 11,149

Approximate annual cooling cost At 14.8¢/kWh, Wyoming average $1

Approximate annual electric heating cost Lower where heating is gas rather than electric $578

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 Teton County, where electricity is one line of eight.

Common questions

What is the weather like in Teton County?

Teton County averages a high of 76.9°F in July and a low of 0.6°F in January. Annual precipitation is 32.82 inches, including 293.6 inches of snow.

When is the rainy season in Teton County?

The wettest stretch is Nov, Dec, Jan, which accounts for 35% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Teton County?

The average daily high in July, the hottest month, is 76.9°F. That drives 7 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Teton County?

Yes. Teton County averages 293.6 inches of snow a year.

Sources

Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station SNAKE RVR, WY US (USC00488315), 13.4 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, Wyoming residential average.
Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.