| 2023 Hardiness Zone: | Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°F | |
| 2012 Hardiness Zone: | Zone 6b: -5°F to 0°F | |
| 1990 Hardiness Zone: | Zone 6b: -5F to 0F | |
| Average First Frost Date: | Oct. 21 - Oct. 31 | |
| Average Last Frost Date: | Apr. 21 - Apr. 30 | |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers | |
| Ecoregion: | 64b - Trap Rock and Conglomerate Uplands | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 8 - 14 days Over 86°F |
Annual Climate Data for ZIP Code 17325 - Gettysburg, PA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 20 | 22 | 31 | 40 | 50 | 59 | 64 | 62 | 55 | 42 | 34 | 25 | 42 |
| Avg Max Temp (°F) | 37 | 41 | 50 | 63 | 73 | 81 | 85 | 84 | 77 | 65 | 53 | 42 | 63 |
| Avg Precip (In.) | 3.45 | 2.8 | 3.76 | 3.56 | 4.27 | 4 | 3.29 | 3.37 | 4.06 | 3.34 | 3.48 | 3.22 | 42.61 |