Hartleton weather by month
What a typical year looks like in Hartleton, Pennsylvania: average highs and lows, rain and snow, and the warmest and coldest days on record. Normals are the 1991–2020 averages at Lewisburg, 24 km from Hartleton; records cover 1996–2026.
The year at a glance
- Precipitation a year
- 43.9 in1115 mm
- Snow a year
- 29 in73 cm
- Last spring freeze
- Apr 24
- First fall freeze
- Oct 19
- Heating degree days
- 6,003
- Cooling degree days
- 702
Freeze dates are medians (half of years earlier, half later). Degree days use a 65°F base; HVAC design temperatures here are 3°−16° (heating, 99%) and 94°34° (cooling, 1%).
Month by month
Hartleton in January
Highs average 35°2° and lows 19°−7°, with 3.1 in80 mm of precipitation and 8 in20 cm of snow in a typical January.
- Record high
- 68°20° (2002)
- Record low
- −13°−25° (2009)
- Heating degree days
- 1176
- Cooling degree days
- 0
Hartleton in February
Highs average 38°4° and lows 20°−7°, with 2.4 in61 mm of precipitation and 8 in20 cm of snow in a typical February.
- Record high
- 75°24° (2017)
- Record low
- −8°−22° (2014)
- Heating degree days
- 1005
- Cooling degree days
- 0
Hartleton in March
Highs average 48°9° and lows 27°−3°, with 3.5 in88 mm of precipitation and 5 in13 cm of snow in a typical March.
- Record high
- 88°31° (1998)
- Record low
- −4°−20° (2003)
- Heating degree days
- 851
- Cooling degree days
- 0
Hartleton in April
Highs average 62°17° and lows 37°3°, with 3.8 in95 mm of precipitation and 0.8 in2 cm of snow in a typical April.
- Record high
- 94°34° (2009)
- Record low
- 17°−8° (2008)
- Heating degree days
- 474
- Cooling degree days
- 6
Hartleton in May
Highs average 72°22° and lows 48°9°, with 3.9 in100 mm of precipitation in a typical May.
- Record high
- 93°34° (2006)
- Record low
- 29°−2° (2020)
- Heating degree days
- 196
- Cooling degree days
- 38
Hartleton in June
Highs average 80°27° and lows 57°14°, with 3.7 in95 mm of precipitation in a typical June.
- Record high
- 97°36° (2025)
- Record low
- 39°4° (2009)
- Heating degree days
- 33
- Cooling degree days
- 139
Hartleton in July
Highs average 84°29° and lows 62°16°, with 4.5 in114 mm of precipitation in a typical July.
- Record high
- 100°38° (2011)
- Record low
- 46°8° (2001)
- Heating degree days
- 3
- Cooling degree days
- 248
Hartleton in August
Highs average 83°28° and lows 60°15°, with 4.3 in109 mm of precipitation in a typical August.
- Record high
- 100°38° (2001)
- Record low
- 42°6° (2008)
- Heating degree days
- 9
- Cooling degree days
- 198
Hartleton in September
Highs average 75°24° and lows 52°11°, with 4.4 in112 mm of precipitation in a typical September.
- Record high
- 97°36° (2002)
- Record low
- 30°−1° (2000)
- Heating degree days
- 102
- Cooling degree days
- 66
Hartleton in OctoberThis month
Highs average 63°17° and lows 41°5°, with 3.8 in97 mm of precipitation and 0.2 in0.5 cm of snow in a typical October.
- Record high
- 92°33° (2007)
- Record low
- 23°−5° (2008)
- Heating degree days
- 407
- Cooling degree days
- 7
Hartleton in November
Highs average 51°10° and lows 31°0°, with 3.1 in79 mm of precipitation and 1.3 in3.3 cm of snow in a typical November.
- Record high
- 80°27° (2024)
- Record low
- 10°−12° (2017)
- Heating degree days
- 723
- Cooling degree days
- 0
Hartleton in December
Highs average 40°4° and lows 24°−4°, with 3.4 in85 mm of precipitation and 5 in14 cm of snow in a typical December.
- Record high
- 71°22° (2001)
- Record low
- −4°−20° (2005)
- Heating degree days
- 1024
- Cooling degree days
- 0