| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F |
| 1990 Hardiness Zone: | Zone 6a: -10F to -5F |
| Average First Frost Date: | Oct. 11 - Oct. 20 |
| Average Last Frost Date: | May 11 - May 20 |
| 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 18505 - Scranton, PA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 17 | 17 | 26 | 36 | 45 | 54 | 59 | 58 | 51 | 39 | 31 | 23 | 38 |
| Avg Max Temp (°F) | 34 | 36 | 46 | 58 | 70 | 78 | 82 | 80 | 72 | 61 | 48 | 38 | 58 |
| Avg Precip (In.) | 2.57 | 2.26 | 2.84 | 3.41 | 3.86 | 4.14 | 3.87 | 3.28 | 4 | 3.19 | 3.31 | 2.72 | 39.46 |