| Division 9 Seasonal Snowfall | ||||||||||
| Year | September | October | November | December | January | February | March | April | May | Seasonal Snowfall |
| 50-51** | 0.0 | 0.0 | 29.4 | 20.0 | 11.1 | 3.9 | 5.5 | 0.9 | 0.0 | 70.7 |
| 51-52** | 0.0 | 0.0 | 6.9 | 19.6 | 3.8 | 2.6 | 9.5 | 2.2 | 0.0 | 44.6 |
| 52-53** | 0.0 | 0.3 | 2.2 | 8.8 | 9.0 | 3.6 | 39.1 | 3.6 | 0.0 | 66.6 |
| 53-54** | 0.0 | 0.0 | 2.9 | 3.7 | 10.6 | 5.5 | 6.5 | 0.0 | 0.1 | 29.3 |
| 54-55** | 0.0 | 0.2 | 1.8 | 11.1 | 9.9 | 10.8 | 5.4 | 0.0 | 0.0 | 39.2 |
| 55-56** | 0.0 | 0.0 | 7.0 | 3.9 | 9.5 | 2.4 | 13.5 | 2.4 | 0.0 | 38.6 |
| 56-57 | 0.0 | 0.0 | 2.5 | 9.6 | 11.9 | 6.9 | 5.6 | 1.9 | 0.0 | 38.4 |
| 57-58 | 0.0 | 0.5 | 0.4 | 6.0 | 13.9 | 14.1 | 11.2 | 0.5 | 0.0 | 46.6 |
| 58-59 | 0.0 | 0.0 | 6.9 | 8.2 | 13.4 | 2.9 | 8.0 | 2.9 | 0.0 | 42.3 |
| 59-60 | 0.0 | 0.0 | 2.1 | 10.1 | 4.2 | 25.4 | 22.0 | 0.7 | 0.0 | 64.5 |
| 60-61 | 0.0 | 0.3 | 0.6 | 20.6 | 21.1 | 20.9 | 1.3 | 3.1 | 0.0 | 67.9 |
| 61-62 | 0.0 | 0.0 | 1.9 | 7.1 | 6.0 | 10.6 | 16.6 | 1.6 | 0.0 | 43.8 |
| 62-63 | 0.0 | 1.7 | 0.4 | 19.0 | 12.0 | 18.0 | 5.6 | 0.1 | 1.2 | 58.0 |
| 63-64 | 0.0 | 0.0 | 3.0 | 18.1 | 22.0 | 16.6 | 6.8 | 0.9 | 0.0 | 67.4 |
| 64-65 | 0.0 | 0.0 | 0.7 | 4.4 | 12.3 | 9.3 | 14.3 | 0.4 | 0.0 | 41.4 |
| 65-66 | 0.0 | 0.0 | 1.0 | 1.5 | 21.3 | 12.0 | 4.7 | 2.4 | 0.4 | 43.3 |
| 66-67 | 0.0 | 0.0 | 6.0 | 7.9 | 3.6 | 20.0 | 17.8 | 0.5 | 0.0 | 55.8 |
| 67-68 | 0.0 | 0.0 | 4.7 | 9.0 | 12.0 | 6.6 | 7.1 | 0.0 | 0.0 | 39.4 |
| 68-69 | 0.0 | 0.0 | 3.5 | 9.0 | 4.2 | 6.3 | 4.1 | 0.0 | 0.0 | 27.1 |
| 69-70 | 0.0 | 0.1 | 5.2 | 19.0 | 14.6 | 13.8 | 13.4 | 0.5 | 0.0 | 66.6 |
| 70-71 | 0.0 | 0.0 | 0.6 | 7.3 | 12.2 | 15.7 | 18.2 | 0.3 | 0.0 | 54.3 |
| 71-72 | 0.0 | 0.0 | 10.0 | 1.9 | 5.3 | 23.7 | 9.3 | 1.5 | 0.0 | 51.7 |
| 72-73 | 0.0 | 1.0 | 3.0 | 6.2 | 3.3 | 6.5 | 4.3 | 1.5 | 0.0 | 25.8 |
| 73-74 | 0.0 | 0.0 | 1.3 | 6.5 | 5.7 | 5.4 | 1.4 | 1.4 | 0.0 | 21.7 |
| 74-75 | 0.0 | 0.1 | 1.8 | 13.9 | 11.7 | 11.8 | 7.1 | 1.0 | 0.0 | 47.4 |
| 75-76 | 0.0 | 0.0 | 0.7 | 5.1 | 22.4 | 5.5 | 5.0 | 0.7 | 0.0 | 39.4 |
| 76-77 | 0.0 | 0.0 | 4.9 | 11.4 | 23.0 | 8.7 | 2.0 | 1.0 | 0.0 | 51.0 |
| 77-78 | 0.0 | 0.0 | 5.1 | 10.1 | 41.1 | 12.4 | 6.6 | 0.2 | 0.0 | 75.5 |
| 78-79 | 0.0 | 0.0 | 1.8 | 5.0 | 20.2 | 21.5 | 2.1 | 0.8 | 0.0 | 51.4 |
| 79-80 | 0.0 | 0.1 | 0.9 | 2.5 | 10.0 | 10.3 | 9.8 | 0.2 | 0.0 | 33.8 |
| 80-81 | 0.0 | 0.2 | 7.9 | 8.7 | 17.9 | 11.6 | 12.7 | 0.1 | 0.0 | 59.1 |
| 81-82 | 0.0 | 0.1 | 1.5 | 15.8 | 12.7 | 8.0 | 15.4 | 6.0 | 0.0 | 59.5 |
| 82-83 | 0.0 | 0.1 | 0.8 | 6.3 | 6.2 | 14.0 | 2.2 | 1.1 | 0.0 | 30.7 |
| 83-84 | 0.0 | 0.0 | 5.2 | 10.5 | 16.6 | 8.3 | 9.3 | 0.9 | 0.0 | 50.8 |
| 84-85 | 0.0 | 0.0 | 3.9 | 6.0 | 21.7 | 13.7 | 0.3 | 5.5 | 0.0 | 51.1 |
| 85-86 | 0.0 | 0.0 | 0.0 | 12.2 | 13.1 | 14.0 | 3.0 | 2.0 | 0.0 | 44.3 |
| 86-87 | 0.0 | 0.0 | 0.4 | 0.6 | 16.7 | 2.2 | 4.0 | 8.6 | 0.0 | 32.5 |
| 87-88 | 0.0 | 0.0 | 5.1 | 6.6 | 9.7 | 12.5 | 10.0 | 0.3 | 0.0 | 44.2 |
| 88-89 | 0.0 | 0.0 | 0.8 | 8.2 | 5.6 | 6.2 | 5.1 | 0.9 | 0.2 | 27.0 |
| 89-90 | 0.0 | 0.1 | 3.1 | 18.1 | 10.0 | 3.5 | 1.6 | 3.6 | 0.0 | 40.0 |
| 90-91 | 0.0 | 0.0 | 0.0 | 6.0 | 9.5 | 6.6 | 5.9 | 0.2 | 0.0 | 28.2 |
| 91-92 | 0.0 | 0.0 | 1.1 | 4.3 | 13.2 | 3.7 | 15.4 | 1.7 | 0.0 | 39.4 |
| 92-93 | 0.0 | 0.2 | 1.5 | 22.0 | 2.5 | 15.7 | 26.6 | 0.4 | 0.0 | 68.9 |
| 93-94 | 0.0 | 1.0 | 4.1 | 8.6 | 35.6 | 14.6 | 18.4 | 0.2 | 0.0 | 82.5 |
| 94-95 | 0.0 | 0.0 | 0.8 | 0.2 | 7.8 | 8.4 | 5.0 | 0.2 | 0.0 | 22.4 |
| 95-96 | 0.0 | 0.0 | 14.5 | 14.6 | 24.8 | 10.9 | 12.2 | 1.3 | 0.0 | 78.3 |
| 96-97 | 0.0 | 0.0 | 2.6 | 6.0 | 2.7 | 5.8 | 1.3 | 1.4 | 0.0 | 19.8 |
| 97-98 | 0.0 | 0.0 | 1.4 | 9.2 | 2.4 | 4.3 | 2.9 | 0.0 | 0.0 | 20.2 |
| 98-99 | 0.0 | 0.0 | 0.0 | 2.9 | 18.0 | 3.9 | 19.4 | 0.0 | 0.0 | 44.2 |
| 99-00 | 0.0 | 0.0 | 1.2 | 3.6 | 11.6 | 6.4 | 1.0 | 0.9 | 0.0 | 24.7 |
| 00-01 | 0.0 | 0.1 | 2.2 | 13.8 | 16.3 | 2.9 | 11.2 | 0.7 | 0.0 | 47.2 |
| 01-02 | 0.0 | 0.2 | 0.0 | 3.0 | 11.3 | 6.3 | 0.0 | 0.0 | 0.0 | 20.8 |
| 02-03 | 0.0 | 0.0 | 2.4 | 12.5 | 19.0 | 29.1 | 3.8 | 0.5 | 0.0 | 67.3 |
| 03-04 | 0.0 | 0.0 | 1.2 | 17.9 | 24.7 | 5.9 | 5.5 | 1.5 | 0.0 | 56.7 |
| ** Prior to September of 1956, only three climate divisions existed in Pennsylvania; therefore, snowfall values for September 1950 through May 1956 are estimates. | ||||||||||