Currently: 35 °F. Clear. (Weather station: Lehigh Valley International Airport, USA). See more current weatherAnnual Weather Averages Near Allentown
Averages are for Lehigh Valley International Airport, which is 4 miles from Allentown.
Based on weather reports collected during 1992–2021.
All Year Climate & Weather Averages in Allentown
High Temp: 86 °F
Low Temp: 21 °F
Mean Temp: 52 °F
Precipitation: 3.97"
Humidity: 67%
Dew Point: 41 °F
Wind: 11 mph
Pressure: 30.05 "Hg
Visibility: 9 mi
January Climate & Weather Averages in Allentown
High Temp: 38 °F
Low Temp: 21 °F
Mean Temp: 29 °F
Precipitation: 3.25"
Humidity: 67%
Dew Point: 19 °F
Wind: 13 mph
Pressure: 30.09 "Hg
Visibility: 9 mi
February Climate & Weather Averages in Allentown
High Temp: 40 °F
Low Temp: 23 °F
Mean Temp: 32 °F
Precipitation: 2.91"
Humidity: 63%
Dew Point: 20 °F
Wind: 13 mph
Pressure: 30.08 "Hg
Visibility: 9 mi
March Climate & Weather Averages in Allentown
High Temp: 50 °F
Low Temp: 30 °F
Mean Temp: 40 °F
Precipitation: 3.63"
Humidity: 59%
Dew Point: 26 °F
Wind: 14 mph
Pressure: 30.07 "Hg
Visibility: 9 mi
April Climate & Weather Averages in Allentown
High Temp: 62 °F
Low Temp: 39 °F
Mean Temp: 51 °F
Precipitation: 3.59"
Humidity: 58%
Dew Point: 36 °F
Wind: 13 mph
Pressure: 30.00 "Hg
Visibility: 9 mi
May Climate & Weather Averages in Allentown
High Temp: 72 °F
Low Temp: 50 °F
Mean Temp: 61 °F
Precipitation: 3.71"
Humidity: 65%
Dew Point: 48 °F
Wind: 11 mph
Pressure: 30.01 "Hg
Visibility: 9 mi
June Climate & Weather Averages in Allentown
High Temp: 81 °F
Low Temp: 59 °F
Mean Temp: 70 °F
Precipitation: 4.49"
Humidity: 68%
Dew Point: 59 °F
Wind: 10 mph
Pressure: 29.97 "Hg
Visibility: 9 mi
July Climate & Weather Averages in Allentown
High Temp: 86 °F
Low Temp: 64 °F
Mean Temp: 75 °F
Precipitation: 5.29"
Humidity: 68%
Dew Point: 64 °F
Wind: 9 mph
Pressure: 29.97 "Hg
Visibility: 9 mi
August Climate & Weather Averages in Allentown
High Temp: 84 °F
Low Temp: 62 °F
Mean Temp: 73 °F
Precipitation: 4.67"
Humidity: 71%
Dew Point: 63 °F
Wind: 8 mph
Pressure: 30.02 "Hg
Visibility: 9 mi
September Climate & Weather Averages in Allentown
High Temp: 77 °F
Low Temp: 55 °F
Mean Temp: 66 °F
Precipitation: 4.99"
Humidity: 72%
Dew Point: 56 °F
Wind: 9 mph
Pressure: 30.07 "Hg
Visibility: 9 mi
October Climate & Weather Averages in Allentown
High Temp: 65 °F
Low Temp: 43 °F
Mean Temp: 54 °F
Precipitation: 4.20"
Humidity: 71%
Dew Point: 45 °F
Wind: 10 mph
Pressure: 30.08 "Hg
Visibility: 9 mi
November Climate & Weather Averages in Allentown
High Temp: 53 °F
Low Temp: 33 °F
Mean Temp: 43 °F
Precipitation: 3.23"
Humidity: 68%
Dew Point: 33 °F
Wind: 11 mph
Pressure: 30.13 "Hg
Visibility: 9 mi
December Climate & Weather Averages in Allentown
High Temp: 42 °F
Low Temp: 26 °F
Mean Temp: 34 °F
Precipitation: 3.74"
Humidity: 70%
Dew Point: 25 °F
Wind: 11 mph
Pressure: 30.10 "Hg
Visibility: 9 mi