Hartley weather by month
What a typical year looks like in Hartley, Texas: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Dalhart FAA Airport, 20 km from Hartley; records cover 1948–2026.
The year at a glance
- Precipitation a year
- 15.6 in396 mm
- Snow a year
- 20 in52 cm
- Last spring freeze
- Apr 22
- First fall freeze
- Oct 18
- Heating degree days
- 4,365
- Cooling degree days
- 1,404
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 6°−14° (heating, 99%) and 102°39° (cooling, 1%).
Month by month
Hartley in January
Highs average 51°11° and lows 21°−6°, with 0.47 in12 mm of precipitation and 4 in11 cm of snow in a typical January.
- Record high
- 82°28° (1956)
- Record low
- −21°−29° (1959)
- Heating degree days
- 888
- Cooling degree days
- 0
Hartley in February
Highs average 55°13° and lows 24°−4°, with 0.35 in8.9 mm of precipitation and 3 in9 cm of snow in a typical February.
- Record high
- 89°32° (2017)
- Record low
- −19°−28° (1951)
- Heating degree days
- 714
- Cooling degree days
- 0
Hartley in March
Highs average 64°18° and lows 31°−1°, with 0.93 in24 mm of precipitation and 3 in8 cm of snow in a typical March.
- Record high
- 98°37° (2026)
- Record low
- 0°−18° (1960)
- Heating degree days
- 553
- Cooling degree days
- 1
Hartley in April
Highs average 71°22° and lows 39°4°, with 1.3 in32 mm of precipitation and 1.5 in3.8 cm of snow in a typical April.
- Record high
- 96°36° (2012)
- Record low
- 16°−9° (1979)
- Heating degree days
- 310
- Cooling degree days
- 10
Hartley in May
Highs average 80°27° and lows 50°10°, with 1.7 in43 mm of precipitation in a typical May.
- Record high
- 102°39° (1996)
- Record low
- 25°−4° (2013)
- Heating degree days
- 97
- Cooling degree days
- 96
Hartley in June
Highs average 90°32° and lows 60°15°, with 2.2 in57 mm of precipitation in a typical June.
- Record high
- 110°43° (2011)
- Record low
- 37°3° (1983)
- Heating degree days
- 5
- Cooling degree days
- 302
Hartley in July
Highs average 94°34° and lows 64°18°, with 2.5 in64 mm of precipitation in a typical July.
- Record high
- 108°42° (2019)
- Record low
- 49°9° (1987)
- Heating degree days
- 0
- Cooling degree days
- 427
Hartley in August
Highs average 91°33° and lows 63°17°, with 2.2 in55 mm of precipitation in a typical August.
- Record high
- 106°41° (2007)
- Record low
- 43°6° (1988)
- Heating degree days
- 1
- Cooling degree days
- 371
Hartley in September
Highs average 84°29° and lows 55°13°, with 1.3 in33 mm of precipitation in a typical September.
- Record high
- 104°40° (2023)
- Record low
- 27°−3° (1985)
- Heating degree days
- 39
- Cooling degree days
- 176
Hartley in OctoberThis month
Highs average 73°23° and lows 42°5°, with 1.6 in42 mm of precipitation and 1.3 in3.3 cm of snow in a typical October.
- Record high
- 96°36° (2000)
- Record low
- 9°−13° (1993)
- Heating degree days
- 265
- Cooling degree days
- 20
Hartley in November
Highs average 61°16° and lows 30°−1°, with 0.53 in13 mm of precipitation and 1.9 in4.8 cm of snow in a typical November.
- Record high
- 89°32° (1980)
- Record low
- −5°−21° (1976)
- Heating degree days
- 596
- Cooling degree days
- 1
Hartley in December
Highs average 51°10° and lows 22°−6°, with 0.54 in14 mm of precipitation and 5 in13 cm of snow in a typical December.
- Record high
- 82°28° (1955)
- Record low
- −12°−24° (1961)
- Heating degree days
- 897
- Cooling degree days
- 0