| 2023 Hardiness Zone: | Zone 6b: -5°F to 0°F | |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F | |
| 1990 Hardiness Zone: | Zone 1b: -15F to -10F | |
| Average First Frost Date: | Oct. 21 - Oct. 31 | |
| Average Last Frost Date: | May 1 - May 10 | |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers | |
| Ecoregion: | 67b - Northern Shale Valleys | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 17801 - Sunbury, PA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 18 | 19 | 28 | 36 | 46 | 57 | 61 | 59 | 51 | 40 | 32 | 24 | 39 |
| Avg Max Temp (°F) | 35 | 38 | 48 | 60 | 71 | 79 | 84 | 82 | 74 | 64 | 51 | 40 | 60 |
| Avg Precip (In.) | 3.05 | 2.48 | 3.26 | 3.62 | 3.96 | 4.55 | 3.78 | 3.67 | 4.09 | 3.28 | 3.49 | 2.99 | 42.22 |