Average Precipitation for Pennsylvania in December
The tables below give monthly averages for rainfall plus snowfall during December at cities, towns and parks in Pennsylvania.
Each place has a total for the amount of precipitation it usually receives this month along with information on the number of days with wet weather. That includes the days when precipitation amounts to 0.01 inches (0.25 millimetres) or more.
The precipitation totals are averages based on weather data collected from 1981 to 2010 for the NOAA National Climatic Data Center.
You can jump to a separate table for Eastern and Western Pennsylvania.
Eastern Pennsylvania
| Days | Place | Inches | Millimetres |
|---|---|---|---|
| 11 | Allentown | 3.6 | 91 |
| 9 | Chambersburg | 3.2 | 82 |
| 13 | George B. Stevenson Reservoir | 3.0 | 76 |
| 10 | Harrisburg | 3.2 | 81 |
| 10 | Lancaster | 3.3 | 83 |
| 11 | Matamoras | 3.6 | 91 |
| 9 | Norristown | 4.2 | 106 |
| 11 | Philadelphia | 3.6 | 90 |
| 13 | State College | 2.9 | 73 |
| 10 | Towanda | 2.5 | 64 |
| 12 | Wilkes-Barre & Scranton | 2.7 | 68 |
| 11 | Williamsport | 2.9 | 74 |
| 10 | York | 3.3 | 84 |
Western Pennsylvania
| Days | Place | Inches | Millimetres |
|---|---|---|---|
| 10 | Altoona | 2.4 | 61 |
| 17 | Bradford | 4.0 | 101 |
| 17 | Butler | 3.2 | 82 |
| 19 | Erie | 3.7 | 95 |
| 15 | Indiana | 3.4 | 86 |
| 16 | Jamestown | 3.3 | 83 |
| 14 | New Castle | 3.0 | 75 |
| 15 | Pittsburgh | 2.9 | 72 |
| 15 | Uniontown | 3.1 | 78 |
| 18 | Warren | 3.9 | 98 |
| 16 | Youghiogheny River Lake | 3.6 | 91 |
Reference
National Climatic Data Center. NOAA's 1981-2010 Climate Normals.