| 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 Zone 5b: -15°F to -10°F |
| 1990 Hardiness Zone: | Zone 1b: -15F to -10F |
| Average First Frost Date: | Oct. 1 - Oct. 10 |
| Average Last Frost Date: | May 21 - May 31 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 69b - Uplands and Valleys of Mixed Land Use |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 15946 - Portage, PA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 16 | 17 | 25 | 34 | 44 | 53 | 57 | 56 | 49 | 38 | 30 | 21 | 37 |
| Avg Max Temp (°F) | 34 | 38 | 47 | 59 | 69 | 76 | 80 | 79 | 72 | 62 | 49 | 38 | 59 |
| Avg Precip (In.) | 3.64 | 3.11 | 4.18 | 4.09 | 4.52 | 4.44 | 4.78 | 3.87 | 4.26 | 3.14 | 3.88 | 3.47 | 47.39 |