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United States › Colorado › Mesa County › Climate Station GRAND JUNCTION 6ESE, CO US Distance 1.6 mi Normals 1991–2020

30-year climate normals

Mesa County Climate and Weather Averages

Hottest month — July

93.1°

average daily high. The coldest month is January, averaging a low of 19.2°F.

Mesa County gets 8.89" of precipitation a year and 12.6" of snow, and 33% of it falls in Aug, Sep, Oct.

Temperature through the year

Each bar spans the average daily low to the average daily high for that month.

20° 40° 60° 80° JanFebMarAprMayJunJulAugSepOctNovDec
MonthAvg highAvg low PrecipSnow
January 39.1° 19.2° 0.50" 3.4"
February 46.5° 25.2° 0.46" 2.1"
March 57.9° 33.7° 0.77" 1.1"
April 65.4° 40.2° 0.96" 0.6"
May 75.6° 49.5° 0.93" 0.0"
June 87.7° 59.2° 0.45" 0.0"
July 93.1° 65.3° 0.72" 0.0"
August 89.8° 63.0° 0.78" 0.0"
September 81.2° 54.4° 1.21" 0.0"
October 67.1° 41.4° 0.92" 0.2"
November 52.3° 29.9° 0.68" 1.7"
December 39.6° 20.0° 0.51" 3.5"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 33% falling in the wettest three months (Aug, Sep, Oct).

January 0.50"
February 0.46"
March 0.77"
April 0.96"
May 0.93"
June 0.45"
July 0.72"
August 0.78"
September 1.21"
October 0.92"
November 0.68"
December 0.51"
Annual total 8.89"

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 1,284
Heating degree days How much heating the climate demands 5,259
Approximate annual cooling cost At 16.16¢/kWh, Colorado average $207
Approximate annual electric heating cost Lower where heating is gas rather than electric $297

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 Mesa County, where electricity is one line of eight.

Common questions

What is the weather like in Mesa County?

Mesa County averages a high of 93.1°F in July and a low of 19.2°F in January. Annual precipitation is 8.89 inches, including 12.6 inches of snow.

When is the rainy season in Mesa County?

The wettest stretch is Aug, Sep, Oct, which accounts for 33% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Mesa County?

The average daily high in July, the hottest month, is 93.1°F. That drives 1,284 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Mesa County?

Yes. Mesa County averages 12.6 inches of snow a year.

Sources

  • Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station GRAND JUNCTION 6ESE, CO US (USC00053489), 1.6 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, Colorado residential average.
  • Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.