Harper weather by month
What a typical year looks like in Harper, Texas: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Harper 3ene, 8 km from Harper; records cover 2010–2026.
The year at a glance
- Precipitation a year
- 28.3 in718 mm
- Snow a year
- Rare
- Last spring freeze
- Mar 7
- First fall freeze
- Nov 3
- Heating degree days
- 2,206
- Cooling degree days
- 2,139
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 17°−8° (heating, 99%) and 100°38° (cooling, 1%).
Month by month
Harper in January
Highs average 60°16° and lows 34°1°, with 1.5 in37 mm of precipitation in a typical January.
- Record high
- 84°29° (2012)
- Record low
- 5°−15° (2024)
- Heating degree days
- 551
- Cooling degree days
- 1
Harper in February
Highs average 64°18° and lows 38°3°, with 1.7 in42 mm of precipitation in a typical February.
- Record high
- 90°32° (2024)
- Record low
- 2°−17° (2021)
- Heating degree days
- 400
- Cooling degree days
- 5
Harper in March
Highs average 70°21° and lows 45°7°, with 2.6 in66 mm of precipitation in a typical March.
- Record high
- 93°34° (2012)
- Record low
- 15°−9° (2015)
- Heating degree days
- 259
- Cooling degree days
- 21
Harper in April
Highs average 77°25° and lows 52°11°, with 2.1 in53 mm of precipitation in a typical April.
- Record high
- 98°37° (2011)
- Record low
- 26°−3° (2011)
- Heating degree days
- 93
- Cooling degree days
- 84
Harper in May
Highs average 83°28° and lows 61°16°, with 4.2 in105 mm of precipitation in a typical May.
- Record high
- 102°39° (2024)
- Record low
- 31°−1° (2011)
- Heating degree days
- 18
- Cooling degree days
- 237
Harper in June
Highs average 89°32° and lows 67°19°, with 2.8 in71 mm of precipitation in a typical June.
- Record high
- 105°41° (2023)
- Record low
- 53°12° (2015)
- Heating degree days
- 0
- Cooling degree days
- 390
Harper in July
Highs average 92°33° and lows 69°21°, with 1.7 in44 mm of precipitation in a typical July.
- Record high
- 106°41° (2018)
- Record low
- 53°12° (2013)
- Heating degree days
- 0
- Cooling degree days
- 479
Harper in August
Highs average 93°34° and lows 68°20°, with 2.1 in54 mm of precipitation in a typical August.
- Record high
- 106°41° (2011)
- Record low
- 52°11° (2010)
- Heating degree days
- 0
- Cooling degree days
- 486
Harper in September
Highs average 87°30° and lows 62°17°, with 3.2 in81 mm of precipitation in a typical September.
- Record high
- 102°39° (2023)
- Record low
- 42°6° (2010)
- Heating degree days
- 5
- Cooling degree days
- 290
Harper in OctoberThis month
Highs average 79°26° and lows 54°12°, with 2.7 in69 mm of precipitation in a typical October.
- Record high
- 96°36° (2015)
- Record low
- 23°−5° (2019)
- Heating degree days
- 85
- Cooling degree days
- 122
Harper in November
Highs average 68°20° and lows 44°7°, with 2.1 in54 mm of precipitation in a typical November.
- Record high
- 88°31° (2010)
- Record low
- 15°−9° (2010)
- Heating degree days
- 293
- Cooling degree days
- 22
Harper in December
Highs average 61°16° and lows 37°3°, with 1.6 in41 mm of precipitation in a typical December.
- Record high
- 88°31° (2019)
- Record low
- 2°−17° (2022)
- Heating degree days
- 502
- Cooling degree days
- 2