30-year climate normals

Grant County Climate and Weather Averages

Hottest month — July

90.9°

average daily high. The coldest month is January, averaging a low of 20.4°F.

Grant County gets 14.51" of precipitation a year, and 49% 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	55.3°	20.4°	1.16"
February	59.8°	23.7°	1.09"
March	66.8°	27.5°	0.63"
April	73.8°	32.6°	0.33"
May	81.8°	40.9°	0.39"
June	90.8°	50.2°	0.64"
July	90.9°	58.7°	2.69"
August	89.2°	57.6°	2.45"
September	84.5°	50.3°	1.99"
October	75.5°	38.0°	0.95"
November	64.1°	26.4°	0.84"
December	54.5°	21.1°	1.35"

Rainfall by month

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

January 1.16"

February 1.09"

March 0.63"

April 0.33"

May 0.39"

June 0.64"

July 2.69"

August 2.45"

September 1.99"

October 0.95"

November 0.84"

December 1.35"

Annual total 14.51"

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 875

Heating degree days How much heating the climate demands 4,278

Approximate annual cooling cost At 14.12¢/kWh, New Mexico average $124

Approximate annual electric heating cost Lower where heating is gas rather than electric $211

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 Grant County, where electricity is one line of eight.

Common questions

What is the weather like in Grant County?

Grant County averages a high of 90.9°F in July and a low of 20.4°F in January. Annual precipitation is 14.51 inches, with essentially no snow.

When is the rainy season in Grant County?

The wettest stretch is Jul, Aug, Sep, 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 Grant County?

The average daily high in July, the hottest month, is 90.9°F. That drives 875 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Grant County?

Effectively no. Measurable snowfall is rare in Grant County.

Sources

Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station CLIFF 11 SE, NM US (USC00291910), 10 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.