Williamsport, PA
Climate overview — based on NOAA 1991-2020 normals from WILLIAMSPORT 2, PA US.
Year-round temperatures (°F)
Climate summary
Williamsport has an annual average temperature of 51.8°F with about 42.7 inches of precipitation per year and 32.6 inches of snow. The warmest month is July (average high 85.6°F), and the coldest is January (average low 20.5°F). September is typically the wettest month (4.54 in) and February the driest (2.39 in). Snow typically falls from November through April.
Best time to visit Williamsport
Full guide →Climate change signal
All-time records →147 of 366 (40.2%) of Williamsport's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.
| 1990s | 10 | |
| 2000s | 151 | |
| 2010s | 121 | |
| 2020s | 84 |
Bars: number of all-time daily heat records still standing that were set in each decade.
Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | 35.6°F | 20.5°F | 28.1°F | 2.99 in | 8.7 in | 12 |
| February | 39.1°F | 21.9°F | 30.5°F | 2.39 in | 8.6 in | 10 |
| March | 48.9°F | 29.1°F | 39.0°F | 3.29 in | 5.7 in | 11 |
| April | 62.5°F | 39.2°F | 50.9°F | 3.62 in | 0.8 in | 13 |
| May | 73.5°F | 49.7°F | 61.6°F | 3.83 in | — | 14 |
| June | 81.4°F | 58.9°F | 70.1°F | 3.92 in | — | 13 |
| July | 85.6°F | 63.2°F | 74.4°F | 4.30 in | — | 12 |
| August | 83.7°F | 62.2°F | 72.9°F | 3.80 in | — | 12 |
| September | 76.3°F | 54.7°F | 65.5°F | 4.54 in | — | 11 |
| October | 63.6°F | 43.2°F | 53.4°F | 3.69 in | 0.1 in | 12 |
| November | 50.8°F | 33.3°F | 42.1°F | 3.09 in | 1.6 in | 10 |
| December | 39.8°F | 25.7°F | 32.7°F | 3.26 in | 7.1 in | 12 |
Climate twins of Williamsport
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).