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United States › New Mexico › Union County › Climate Station CLAYTON MUNI AIR PK, NM US Distance 18.1 mi Normals 1991–2020

30-year climate normals

Union County Climate and Weather Averages

Hottest month — July

90.0°

average daily high. The coldest month is January, averaging a low of 21.4°F.

Union County gets 16.12" of precipitation a year and 22.3" of snow, and 49% of it falls in Jun, Jul, Aug.

Temperature through the year

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

40° 60° 80° JanFebMarAprMayJunJulAugSepOctNovDec
MonthAvg highAvg low PrecipSnow
January 49.5° 21.4° 0.33" 3.7"
February 52.0° 23.0° 0.30" 2.7"
March 60.0° 29.8° 0.91" 3.4"
April 67.3° 36.8° 1.12" 1.3"
May 76.4° 46.6° 1.85" 0.5"
June 86.4° 56.1° 1.97" 0.0"
July 90.0° 60.8° 2.81" 0.0"
August 86.6° 59.7° 3.08" 0.0"
September 80.3° 52.5° 1.75" 0.0"
October 69.1° 40.3° 1.13" 1.2"
November 57.7° 29.7° 0.45" 2.7"
December 48.6° 22.0° 0.42" 6.8"

Rainfall by month

Union County has a distinct wet season. 49% of the year's precipitation arrives in Jun, Jul, Aug.

January 0.33"
February 0.30"
March 0.91"
April 1.12"
May 1.85"
June 1.97"
July 2.81"
August 3.08"
September 1.75"
October 1.13"
November 0.45"
December 0.42"
Annual total 16.12"

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 968
Heating degree days How much heating the climate demands 4,848
Approximate annual cooling cost At 14.12¢/kWh, New Mexico average $137
Approximate annual electric heating cost Lower where heating is gas rather than electric $240

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 Union County, where electricity is one line of eight.

Common questions

What is the weather like in Union County?

Union County averages a high of 90.0°F in July and a low of 21.4°F in January. Annual precipitation is 16.12 inches, including 22.3 inches of snow.

When is the rainy season in Union County?

The wettest stretch is Jun, Jul, Aug, which accounts for 49% of the year's precipitation. That is a pronounced wet season rather than rain spread evenly through the year.

How hot does it get in Union County?

The average daily high in July, the hottest month, is 90.0°F. That drives 968 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Union County?

Yes. Union County averages 22.3 inches of snow a year.

Sources

  • Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station CLAYTON MUNI AIR PK, NM US (USW00023051), 18.1 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, New Mexico residential average.
  • Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.