| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F Zone 5b: -15°F to -10°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 5b: -15°F to -10°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: | 69b - Uplands and Valleys of Mixed Land Use |
| Heat Zone Days: | 1 - 7 days Over 86°F |
Annual Climate Data for ZIP Code 15541 - Friedens, PA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 15 | 17 | 24 | 34 | 44 | 52 | 57 | 55 | 49 | 37 | 29 | 20 | 36 |
| Avg Max Temp (°F) | 34 | 37 | 47 | 58 | 68 | 76 | 80 | 78 | 72 | 60 | 48 | 37 | 58 |
| Avg Precip (In.) | 3.13 | 2.8 | 3.78 | 3.57 | 4.12 | 4.08 | 4.18 | 3.47 | 3.44 | 3.17 | 3.39 | 3.14 | 42.26 |