| 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. 1 - Oct. 10 |
| 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 18512 - 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 | 38 | 58 |
| Avg Precip (In.) | 2.65 | 2.26 | 2.85 | 3.41 | 3.89 | 4.18 | 3.89 | 3.29 | 3.97 | 3.15 | 3.28 | 2.72 | 39.52 |