| 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 6b: -5°F to 0°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 11 - May 20 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 67b - Northern Shale Valleys |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 16635 - Duncansville, PA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 19 | 21 | 28 | 38 | 47 | 56 | 61 | 59 | 52 | 41 | 33 | 24 | 40 |
| Avg Max Temp (°F) | 35 | 39 | 48 | 60 | 71 | 79 | 83 | 81 | 74 | 63 | 51 | 40 | 60 |
| Avg Precip (In.) | 2.6 | 2.4 | 3.32 | 3.29 | 3.97 | 4.01 | 3.73 | 3.09 | 3.45 | 2.89 | 3.21 | 2.57 | 38.53 |