Allentown
The tables below display average monthly climate and weather indicators in Allentown Pennsylvania.
Temperature by: Fahrenheit / Centigrade
| Allentown Temperature |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
| Avg. Temperature | -3.0 | -1.5 | 4.1 | 9.8 | 15.7 | 20.8 | 23.4 | 22.3 | 18.2 | 11.8 | 6.2 | -0.1 | 10.7 |
| Avg. Max Temperature | 1.3 | 3.2 | 9.3 | 15.8 | 21.8 | 26.7 | 29.2 | 27.9 | 23.9 | 17.7 | 11.0 | 4.0 | 16.0 |
| Avg. Min Temperature | -7.3 | -6.2 | -1.2 | 3.8 | 9.6 | 14.9 | 17.6 | 16.7 | 12.3 | 5.8 | 1.2 | -4.2 | 5.3 |
| Days with Max Temp of 32 C or Higher | 0.0 | 0.0 | 0.0 | < 0.5 | 1.0 | 3.0 | 7.0 | 4.0 | 1.0 | < 0.5 | 0.0 | 0.0 | 16.0 |
| Days with Min Temp Below Freezing | 28.0 | 25.0 | 20.0 | 6.0 | < 0.5 | 0.0 | 0.0 | 0.0 | < 0.5 | 4.0 | 15.0 | 26.0 | 123 |
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| Allentown Heating and Cooling |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
| Heating Degree Days | 1190 | 1000 | 794 | 459 | 183 | 10.0 | 0.0 | 8.0 | 82.0 | 373 | 657 | 1029 | 5785 |
| Cooling Degree Days | 0.0 | 0.0 | 0.0 | 0.0 | 38.0 | 142 | 282 | 231 | 73.0 | 7.0 | 0.0 | 0.0 | 773 |
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| Allentown Precipitation |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
| Precipitation (inches) | 3.2 | 3.0 | 3.3 | 3.5 | 4.2 | 3.8 | 4.1 | 4.3 | 3.9 | 2.9 | 3.9 | 3.5 | 43.5 |
| Days with Precipitation 0.01 inch or More | 11.0 | 10.0 | 11.0 | 11.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 | 8.0 | 10.0 | 11.0 | 125 |
| Monthly Snowfall (inches) | 9.1 | 9.2 | 5.9 | 0.6 | < 0.05 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 1.3 | 6.1 | 32.3 |
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| Other Allentown Weather Indicators |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
| Average Wind Speed | 10.4 | 10.8 | 11.2 | 10.6 | 9.0 | 8.2 | 7.2 | 6.8 | 7.3 | 8.0 | 9.3 | 9.6 | 9.0 |
| Clear Days | 7.0 | 7.0 | 8.0 | 7.0 | 7.0 | 8.0 | 8.0 | 9.0 | 9.0 | 10.0 | 7.0 | 7.0 | 94.0 |
| Partly Cloudy Days | 8.0 | 8.0 | 8.0 | 9.0 | 11.0 | 11.0 | 12.0 | 11.0 | 9.0 | 9.0 | 8.0 | 7.0 | 110 |
| Cloudy Days | 16.0 | 13.0 | 15.0 | 14.0 | 14.0 | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 15.0 | 17.0 | 161 |
| Percent of Possible Sunshine | 43.0 | 48.0 | 53.0 | 46.0 | 53.0 | 62.0 | 57.0 | 61.0 | 58.0 | 57.0 | 49.0 | 45.0 | 53.0 |
| Avg. Relative Humidity | 62.0 | 69.0 | 66.5 | 63.5 | 63.5 | 65.5 | 68.0 | 69.5 | 72.0 | 71.5 | 68.5 | 69.0 | 71.5 |
Weather information for other cities in Pennsylvania