30-year climate normals

Carbon County Climate and Weather Averages

Hottest month — July

85.1°

average daily high. The coldest month is December, averaging a low of 12.8°F.

Carbon County gets 9.04" of precipitation a year, and 40% 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
January	31.5°	13.2°	0.42"
February	33.9°	14.5°	0.48"
March	45.1°	22.0°	0.66"
April	53.5°	27.3°	1.26"
May	64.2°	35.5°	1.46"
June	76.6°	43.2°	0.87"
July	85.1°	50.8°	0.72"
August	82.6°	49.1°	0.73"
September	72.3°	40.7°	0.89"
October	56.8°	30.4°	0.68"
November	41.8°	20.8°	0.47"
December	31.3°	12.8°	0.40"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 40% falling in the wettest three months (Apr, May, Jun).

January 0.42"

February 0.48"

March 0.66"

April 1.26"

May 1.46"

June 0.87"

July 0.72"

August 0.73"

September 0.89"

October 0.68"

November 0.47"

December 0.40"

Annual total 9.04"

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 224

Heating degree days How much heating the climate demands 8,168

Approximate annual cooling cost At 14.8¢/kWh, Wyoming average $33

Approximate annual electric heating cost Lower where heating is gas rather than electric $423

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 Carbon County, where electricity is one line of eight.

Common questions

What is the weather like in Carbon County?

Carbon County averages a high of 85.1°F in July and a low of 12.8°F in December. Annual precipitation is 9.04 inches, with essentially no snow.

When is the rainy season in Carbon County?

The wettest stretch is Apr, May, Jun, which accounts for 40% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Carbon County?

The average daily high in July, the hottest month, is 85.1°F. That drives 224 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Carbon County?

Effectively no. Measurable snowfall is rare in Carbon County.

Sources

Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station RAWLINS MUNI AP, WY US (USW00024057), 15.4 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.