Terlingua weather by month
What a typical year looks like in Terlingua, Texas: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Castolon, 18 km from Terlingua; records cover 1947–2026.
The year at a glance
- Precipitation a year
- 9.9 in250 mm
- Snow a year
- Rare
- Last spring freeze
- Feb 14
- First fall freeze
- Nov 29
- Heating degree days
- 1,240
- Cooling degree days
- 4,097
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 24°−4° (heating, 99%) and 112°44° (cooling, 1%).
Month by month
Terlingua in January
Highs average 69°21° and lows 36°2°, with 0.36 in9.1 mm of precipitation in a typical January.
- Record high
- 92°33° (2010)
- Record low
- 7°−14° (1962)
- Heating degree days
- 392
- Cooling degree days
- 2
Terlingua in February
Highs average 75°24° and lows 42°5°, with 0.33 in8.4 mm of precipitation in a typical February.
- Record high
- 98°37° (2009)
- Record low
- 5°−15° (2011)
- Heating degree days
- 203
- Cooling degree days
- 21
Terlingua in March
Highs average 83°29° and lows 48°9°, with 0.29 in7.4 mm of precipitation in a typical March.
- Record high
- 105°41° (1982)
- Record low
- 22°−6° (1947)
- Heating degree days
- 86
- Cooling degree days
- 111
Terlingua in April
Highs average 92°33° and lows 57°14°, with 0.37 in9.4 mm of precipitation in a typical April.
- Record high
- 109°43° (1996)
- Record low
- 28°−2° (1947)
- Heating degree days
- 12
- Cooling degree days
- 300
Terlingua in May
Highs average 100°38° and lows 67°19°, with 0.79 in20 mm of precipitation in a typical May.
- Record high
- 115°46° (2011)
- Record low
- 44°7° (1982)
- Heating degree days
- 1
- Cooling degree days
- 573
Terlingua in June
Highs average 104°40° and lows 75°24°, with 1.4 in35 mm of precipitation in a typical June.
- Record high
- 117°47° (1992)
- Record low
- 56°13° (1984)
- Heating degree days
- 0
- Cooling degree days
- 732
Terlingua in July
Highs average 102°39° and lows 75°24°, with 1.7 in43 mm of precipitation in a typical July.
- Record high
- 115°46° (1992)
- Record low
- 60°16° (1985)
- Heating degree days
- 0
- Cooling degree days
- 738
Terlingua in August
Highs average 102°39° and lows 75°24°, with 1.5 in38 mm of precipitation in a typical August.
- Record high
- 114°46° (1980)
- Record low
- 61°16° (2025)
- Heating degree days
- 0
- Cooling degree days
- 727
Terlingua in September
Highs average 96°36° and lows 70°21°, with 1.6 in39 mm of precipitation in a typical September.
- Record high
- 111°44° (2023)
- Record low
- 47°8° (1989)
- Heating degree days
- 1
- Cooling degree days
- 538
Terlingua in OctoberThis month
Highs average 89°32° and lows 59°15°, with 0.81 in21 mm of precipitation in a typical October.
- Record high
- 105°41° (2000)
- Record low
- 29°−2° (1993)
- Heating degree days
- 18
- Cooling degree days
- 303
Terlingua in November
Highs average 78°25° and lows 46°8°, with 0.48 in12 mm of precipitation in a typical November.
- Record high
- 99°37° (1996)
- Record low
- 21°−6° (1992)
- Heating degree days
- 151
- Cooling degree days
- 50
Terlingua in December
Highs average 69°21° and lows 37°3°, with 0.28 in7.1 mm of precipitation in a typical December.
- Record high
- 93°34° (2021)
- Record low
- 7°−14° (1989)
- Heating degree days
- 376
- Cooling degree days
- 2