| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 5a: -20°F to -15°F Zone 5b: -15°F to -10°F |
| 1990 Hardiness Zone: | Zone 5a: -20F to -15F |
| Average First Frost Date: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | May 11 - May 20 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 61c - Low Lime Drift Plain |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 16441 - Waterford, PA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 16 | 17 | 25 | 34 | 44 | 54 | 59 | 58 | 51 | 41 | 32 | 22 | 38 |
| Avg Max Temp (°F) | 32 | 35 | 45 | 57 | 69 | 77 | 81 | 79 | 72 | 60 | 48 | 36 | 58 |
| Avg Precip (In.) | 2.94 | 2.56 | 3.34 | 3.5 | 3.67 | 4.64 | 4.2 | 4.28 | 4.54 | 3.88 | 4 | 3.75 | 45.29 |