Williamsport
The tables below display average monthly climate and weather indicators in Williamsport Pennsylvania.
Temperature by: Fahrenheit / Centigrade
| Williamsport Temperature |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
| Avg. Temperature | -3.8 | -2.2 | 3.4 | 9.5 | 15.3 | 19.9 | 22.4 | 21.6 | 17.5 | 11.1 | 5.4 | -0.6 | 9.9 |
| Avg. Max Temperature | 0.7 | 2.6 | 8.7 | 15.6 | 21.7 | 26.1 | 28.4 | 27.3 | 23.2 | 16.9 | 9.9 | 3.3 | 15.4 |
| Avg. Min Temperature | -8.3 | -7.1 | -1.9 | 3.4 | 8.8 | 13.7 | 16.4 | 15.8 | 11.7 | 5.3 | 0.9 | -4.5 | 4.5 |
| Days with Max Temp of 32 C or Higher | 0.0 | 0.0 | 0.0 | < 0.5 | 1.0 | 3.0 | 6.0 | 3.0 | 1.0 | < 0.5 | 0.0 | 0.0 | 13.0 |
| Days with Min Temp Below Freezing | 28.0 | 25.0 | 21.0 | 8.0 | 1.0 | 0.0 | 0.0 | 0.0 | < 0.5 | 5.0 | 15.0 | 25.0 | 128 |
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| Williamsport Heating and Cooling |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
| Heating Degree Days | 1234 | 1036 | 834 | 477 | 200 | 30.0 | 0.0 | 9.0 | 106 | 408 | 696 | 1057 | 6087 |
| Cooling Degree Days | 0.0 | 0.0 | 0.0 | 0.0 | 29.0 | 114 | 229 | 189 | 61.0 | 0.0 | 0.0 | 0.0 | 622 |
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| Williamsport Precipitation |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
| Precipitation (inches) | 2.5 | 2.8 | 3.2 | 3.2 | 3.9 | 4.3 | 4.0 | 3.4 | 3.4 | 3.3 | 3.7 | 3.0 | 40.7 |
| Days with Precipitation 0.01 inch or More | 12.0 | 11.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 | 12.0 | 12.0 | 140 |
| Monthly Snowfall (inches) | 11.0 | 10.0 | 8.2 | 1.2 | 0.0 | < 0.05 | < 0.05 | < 0.05 | 0.0 | 0.1 | 3.0 | 8.3 | 41.8 |
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| Other Williamsport Weather Indicators |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
| Average Wind Speed | 8.9 | 8.8 | 9.1 | 9.1 | 7.8 | 6.9 | 6.4 | 5.9 | 6.1 | 6.7 | 8.0 | 8.4 | 7.7 |
| Clear Days | 5.0 | 5.0 | 6.0 | 6.0 | 5.0 | 6.0 | 6.0 | 6.0 | 6.0 | 7.0 | 4.0 | 4.0 | 67.0 |
| Partly Cloudy Days | 7.0 | 7.0 | 8.0 | 8.0 | 10.0 | 12.0 | 13.0 | 13.0 | 11.0 | 9.0 | 7.0 | 7.0 | 110 |
| Cloudy Days | 19.0 | 16.0 | 17.0 | 16.0 | 15.0 | 12.0 | 12.0 | 12.0 | 14.0 | 15.0 | 19.0 | 20.0 | 188 |
| Percent of Possible Sunshine | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| Avg. Relative Humidity | 65.0 | 69.0 | 67.5 | 64.5 | 64.5 | 67.5 | 70.5 | 72.5 | 74.5 | 73.5 | 69.5 | 69.5 | 72.5 |
Weather information for other cities in Pennsylvania