What is the hottest month in Costilla, NM?

July is the warmest month, with a normal high of 82°F at San Luis 1 S.

What is the coldest month in Costilla, NM?

January is the coldest month, with a normal low of 6°F.

What is the wettest month in Costilla, NM?

July has the most precipitation on average, about 1.51 inches.

Checked Oct 25, 2026

Costilla, NM Climate

1991 to 2020 normals at San Luis 1 S, 16 mi from the center of Costilla, elevation 7943 ft.

Average weather by month

Select a month for daily normals and last year's weather

Month	High	Low	Precip.	Snow
January	37°	6°	0.38 in	--
February	41°	12°	0.50 in	--
March	52°	23°	0.35 in	--
April	58°	27°	0.56 in	--
May	68°	35°	0.73 in	--
June	79°	42°	0.79 in	--
July	82°	48°	1.51 in	--
August	79°	47°	1.29 in	--
September	74°	39°	1.04 in	--
October	63°	28°	0.94 in	--
November	49°	18°	0.50 in	--
December	39°	9°	0.41 in	--
Year	60°		9.00 in	--

Frequently asked questions

What is the hottest month in Costilla, NM?: July is the warmest month, with a normal high of 82°F at San Luis 1 S.
What is the coldest month in Costilla, NM?: January is the coldest month, with a normal low of 6°F.
What is the wettest month in Costilla, NM?: July has the most precipitation on average, about 1.51 inches.

Today

Costilla, NM forecast

Data sources

U.S. Climate Normals 1991-2020NOAA National Centers for Environmental Information
U.S. Climate Normals 1991-2020 (daily) and GHCN-Daily via Access Data ServiceNOAA National Centers for Environmental Information

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About this data

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Climate normals are 30-year averages measured at one weather station, which may be miles from the place named here or at a different elevation.

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