| 2023 Hardiness Zone: | 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: | Apr. 21 - Apr. 30 | |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers | |
| Ecoregion: | 67b - Northern Shale Valleys | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 1 - 7 days Over 86°F |
Annual Climate Data for ZIP Code 17961 - Orwigsburg, PA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 15 | 17 | 26 | 35 | 45 | 54 | 58 | 57 | 49 | 36 | 29 | 21 | 37 |
| Avg Max Temp (°F) | 35 | 38 | 48 | 60 | 70 | 79 | 83 | 82 | 74 | 64 | 51 | 40 | 60 |
| Avg Precip (In.) | 4 | 3.05 | 3.96 | 3.91 | 4.95 | 4.92 | 4.34 | 4.22 | 4.69 | 3.81 | 4.32 | 3.8 | 49.97 |