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Climate & Weather Averages in Allentown, Pennsylvania, USA

Now
56 °F

Light rain. Overcast.


Feels Like: 53 °F
Forecast: 67 / 55 °F
Wind: 10 mph from Southwest

Location: Lehigh Valley International Airport
Current Time: Sep 30, 2020 at 6:44:47 am
Latest Report: Sep 30, 2020 at 6:09 am
Visibility: 9 mi
Pressure29.61 "Hg
Humidity: 93%
Dew Point: 54 °F
Location of AllentownLocation

Annual 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

Quick Climate Info

Hottest MonthJuly (74 °F avg)
Coldest MonthJanuary (29 °F avg)
Wettest MonthJune (2.50" avg)
Windiest MonthMarch (8 mph avg)
Annual precip.22.87" (per year)

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