| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F |
| 2012 Hardiness Zone: | Zone 5b: -15°F to -10°F |
| 1990 Hardiness Zone: | Zone 5a: -20F to -15F |
| Average First Frost Date: | Oct. 11 - Oct. 20 |
| Average Last Frost Date: | May 11 - May 20 |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 61c - Low Lime Drift Plain |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 16127 - Grove City, PA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 15 | 17 | 25 | 33 | 43 | 52 | 57 | 55 | 48 | 37 | 30 | 21 | 36 |
| Avg Max Temp (°F) | 34 | 37 | 47 | 59 | 70 | 78 | 82 | 80 | 74 | 62 | 49 | 38 | 59 |
| Avg Precip (In.) | 2.72 | 2.37 | 3.26 | 3.44 | 3.83 | 4.7 | 4.3 | 3.92 | 4.05 | 2.86 | 3.52 | 3.15 | 42.13 |