Costilla weather by month
What a typical year looks like in Costilla, New Mexico: average highs and lows, rain and snow, and the warmest and coldest days on record. No nearby active station has official 1991–2020 normals, so these are forecast.blue’s own averages computed from daily observations at San Acacio, 19 km from Costilla, over its available record (2000–2026) — not an NCEI normal; records cover 2000–2026.
The year at a glance
- Precipitation a year
- 5.2 in132 mm
- Snow a year
- Rare
- Last spring freeze
- May 31
- First fall freeze
- Sep 20
- Heating degree days
- —
- Cooling degree days
- —
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are −16°−27° (heating, 99%) and 90°32° (cooling, 1%).
Month by month
Costilla in January
Highs average 37°3° and lows 3°−16°, with — of precipitation in a typical January.
- Record high
- 60°16° (2018)
- Record low
- −32°−36° (2017)
- Heating degree days
- —
- Cooling degree days
- —
Costilla in February
Highs average 42°5° and lows 11°−12°, with — of precipitation in a typical February.
- Record high
- 65°18° (2026)
- Record low
- −27°−33° (2011)
- Heating degree days
- —
- Cooling degree days
- —
Costilla in March
Highs average 52°11° and lows 19°−7°, with — of precipitation in a typical March.
- Record high
- 81°27° (2026)
- Record low
- −9°−23° (2002)
- Heating degree days
- —
- Cooling degree days
- —
Costilla in April
Highs average 60°16° and lows 26°−4°, with — of precipitation in a typical April.
- Record high
- 79°26° (2020)
- Record low
- 1°−17° (2023)
- Heating degree days
- —
- Cooling degree days
- —
Costilla in May
Highs average 68°20° and lows 34°1°, with 0.8 in20 mm of precipitation in a typical May.
- Record high
- 99°37° (2026)
- Record low
- 11°−12° (2008)
- Heating degree days
- —
- Cooling degree days
- —
Costilla in June
Highs average 79°26° and lows 43°6°, with 0.6 in15 mm of precipitation in a typical June.
- Record high
- 93°34° (2015)
- Record low
- 26°−3° (2007)
- Heating degree days
- —
- Cooling degree days
- —
Costilla in July
Highs average 83°29° and lows 49°9°, with 1.5 in38 mm of precipitation in a typical July.
- Record high
- 95°35° (2023)
- Record low
- 35°2° (2004)
- Heating degree days
- —
- Cooling degree days
- —
Costilla in August
Highs average 81°27° and lows 47°8°, with 1.1 in28 mm of precipitation in a typical August.
- Record high
- 94°34° (2026)
- Record low
- 33°1° (2009)
- Heating degree days
- —
- Cooling degree days
- —
Costilla in September
Highs average 75°24° and lows 39°4°, with 1.2 in30 mm of precipitation in a typical September.
- Record high
- 99°37° (2026)
- Record low
- 18°−8° (2008)
- Heating degree days
- —
- Cooling degree days
- —
Costilla in OctoberThis month
Highs average 63°17° and lows 28°−2°, with — of precipitation in a typical October.
- Record high
- 80°27° (2015)
- Record low
- −4°−20° (2019)
- Heating degree days
- —
- Cooling degree days
- —
Costilla in November
Highs average 50°10° and lows 16°−9°, with — of precipitation in a typical November.
- Record high
- 72°22° (2025)
- Record low
- −21°−29° (2004)
- Heating degree days
- —
- Cooling degree days
- —
Costilla in December
Highs average 39°4° and lows 6°−15°, with — of precipitation in a typical December.
- Record high
- 63°17° (2021)
- Record low
- −28°−33° (2007)
- Heating degree days
- —
- Cooling degree days
- —