Currently: 73 °F. Sunny. (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 1985–2015.
All Year Climate & Weather Averages in Allentown
High Temp: 85 °F
Low Temp: 21 °F
Mean Temp: 52 °F
Precipitation: 1.91"
Humidity: 67%
Dew Point: 41 °F
Wind: 6 mph
Pressure: 30.05 "Hg
Visibility: 10 mi
January Climate & Weather Averages in Allentown
High Temp: 37 °F
Low Temp: 21 °F
Mean Temp: 29 °F
Precipitation: 1.68"
Humidity: 68%
Dew Point: 19 °F
Wind: 7 mph
Pressure: 30.10 "Hg
Visibility: 9 mi
February Climate & Weather Averages in Allentown
High Temp: 39 °F
Low Temp: 22 °F
Mean Temp: 31 °F
Precipitation: 1.38"
Humidity: 64%
Dew Point: 19 °F
Wind: 7 mph
Pressure: 30.08 "Hg
Visibility: 10 mi
March Climate & Weather Averages in Allentown
High Temp: 50 °F
Low Temp: 30 °F
Mean Temp: 40 °F
Precipitation: 1.82"
Humidity: 60%
Dew Point: 26 °F
Wind: 8 mph
Pressure: 30.07 "Hg
Visibility: 10 mi
April Climate & Weather Averages in Allentown
High Temp: 62 °F
Low Temp: 39 °F
Mean Temp: 50 °F
Precipitation: 1.80"
Humidity: 60%
Dew Point: 36 °F
Wind: 8 mph
Pressure: 30.00 "Hg
Visibility: 10 mi
May Climate & Weather Averages in Allentown
High Temp: 72 °F
Low Temp: 50 °F
Mean Temp: 61 °F
Precipitation: 2.09"
Humidity: 65%
Dew Point: 49 °F
Wind: 6 mph
Pressure: 30.01 "Hg
Visibility: 10 mi
June Climate & Weather Averages in Allentown
High Temp: 81 °F
Low Temp: 59 °F
Mean Temp: 70 °F
Precipitation: 2.50"
Humidity: 68%
Dew Point: 59 °F
Wind: 6 mph
Pressure: 29.97 "Hg
Visibility: 9 mi
July Climate & Weather Averages in Allentown
High Temp: 85 °F
Low Temp: 64 °F
Mean Temp: 74 °F
Precipitation: 2.45"
Humidity: 69%
Dew Point: 63 °F
Wind: 5 mph
Pressure: 29.98 "Hg
Visibility: 9 mi
August Climate & Weather Averages in Allentown
High Temp: 83 °F
Low Temp: 62 °F
Mean Temp: 72 °F
Precipitation: 1.95"
Humidity: 71%
Dew Point: 62 °F
Wind: 5 mph
Pressure: 30.02 "Hg
Visibility: 9 mi
September Climate & Weather Averages in Allentown
High Temp: 76 °F
Low Temp: 54 °F
Mean Temp: 65 °F
Precipitation: 2.06"
Humidity: 73%
Dew Point: 56 °F
Wind: 5 mph
Pressure: 30.07 "Hg
Visibility: 10 mi
October Climate & Weather Averages in Allentown
High Temp: 64 °F
Low Temp: 42 °F
Mean Temp: 53 °F
Precipitation: 1.67"
Humidity: 71%
Dew Point: 44 °F
Wind: 6 mph
Pressure: 30.08 "Hg
Visibility: 10 mi
November Climate & Weather Averages in Allentown
High Temp: 53 °F
Low Temp: 33 °F
Mean Temp: 43 °F
Precipitation: 1.53"
Humidity: 69%
Dew Point: 33 °F
Wind: 6 mph
Pressure: 30.12 "Hg
Visibility: 10 mi
December Climate & Weather Averages in Allentown
High Temp: 42 °F
Low Temp: 26 °F
Mean Temp: 34 °F
Precipitation: 1.95"
Humidity: 70%
Dew Point: 25 °F
Wind: 7 mph
Pressure: 30.11 "Hg
Visibility: 10 mi