| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F |
| 1990 Hardiness Zone: | Zone 6a: -10F to -5F |
| Average First Frost Date: | Oct. 11 - Oct. 20 |
| Average Last Frost Date: | May 1 - May 10 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 67e - Anthracite Subregion |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 18508 - Scranton, PA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 16 | 16 | 25 | 35 | 45 | 54 | 58 | 57 | 50 | 39 | 30 | 22 | 37 |
| Avg Max Temp (°F) | 33 | 35 | 45 | 57 | 69 | 78 | 82 | 80 | 72 | 61 | 48 | 37 | 58 |
| Avg Precip (In.) | 2.71 | 2.31 | 2.94 | 3.47 | 3.92 | 4.28 | 3.92 | 3.39 | 4 | 3.21 | 3.34 | 2.82 | 40.31 |