Allentown (PA) monthly weather averages

Contents

Average daytime temperature

The bar chart below shows the average monthly peak daytime temperatures at Allentown

Allentown average temperature chart (Celsius) Allentown average temperature chart (Fahrenheit)
Average monthly temperatures in Allentown (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 1.5 3.2 9.2 15.6 21.6 26.5 28.9 27.8 23.8 17.6 11 4.2
°F 34.7 37.8 48.6 60.1 70.9 79.6 84.1 82 74.8 63.7 51.8 39.6

Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.

Average rainfall & rainy days

The graph below shows the average rainfall and number of rainy days per month.

Allentown monthly rainfall chart (mm) Allentown monthly rainfall chart (inches)
Average monthly rainfall in Allentown (mm and inches)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
mm 83 75 89 93 108 96 109 110 101 78 100 91
inches 3.3 3 3.5 3.7 4.2 3.8 4.3 4.3 4 3.1 3.9 3.6
Rainy days 11 10 11 11 12 11 10 10 9 8 11 11

Average annual rainfall in Allentown: 1097.966mm (432.3 inches)

Average daily sunshine

The bar chart below shows the average daily sunshine hours in Allentown

Allentown average daily sunshine chart
Average daily sunshine Allentown
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Hrs sunshine 5.3 6.1 6.9 7.8 8.5 9.6 9.7 9 7.6 6.8 4.9 4.4

Day / night temperatures

The graph below shows the daily range of temperatures for each month.

Allentown average minimum / maximum temperatures (Celsius) Allentown average minimum / maximum temperatures (Fahrenheit)
Maximum and minimum daily temperatures in Allentown (degrees centigrade and fahrenheit)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Min °C -7.3 -6.3 -1.3 3.7 9.5 14.7 17.4 16.6 12.2 5.7 1.2 -4.2
Max °C 1.7 3.5 9.5 15.9 21.9 26.8 29.2 28.1 24.1 17.9 11.3 4.4
Min °F 18.9 20.8 29.7 38.7 49.1 58.4 63.3 61.8 53.9 42.3 34.1 24.4
Max °F 27 29.5 39.4 49.6 60.3 69.3 73.9 72.1 64.6 53.2 43.2 32.2

Sea temperature

The graph below shows the average sea temperature.

Allentown average sea temperature chart (Celsius) Allentown average sea temperature chart (Fahrenheit)
Average sea temperature around Allentown in degrees centigrade and fahrenheit
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
°C 3.2 1.3 1.8 4.8 9.9 16.3 21.8 23.2 21 16.4 11.2 6.7
°F 37.8 34.3 35.2 40.7 49.8 61.4 71.2 73.8 69.9 61.5 52.2 44

Wind speed

The graph below shows the average wind speed.

Allentown average winspeed by month (km/h) Allentown average winspeed by month (mph)
Average wind speed in Allentown (mph and kmh)
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
km/h 17 18 18 18 16 14 13 12 13 14 16 17
mph 11 11 11 11 10 9 8 8 8 9 10 10

A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

Relative humidity

The graph below shows the average relative humidity.

Allentown relative humidity averages
Average relative humidity in Allentown
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
68% 66% 63% 61% 66% 68% 69% 72% 74% 72% 70% 70%

Other monthly averages

UV index Best time to go?

Beta

Current (hourly) weather 15 day forecast

Allentown weather stats

Allentown weather statistics
Hottest month: July 28.9°C 84°F
Driest month: February 75mm 3ins
Sunniest month: July 9.7hrs
Coldest month: January 1.5°C 34.7°F
Wettest month: August 110mm 4.3ins
Warmest sea: August 23.2°C 73.8°F
Map showing location of Allentown (40.60843, -75.49018) Allentown map pin © Google

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