| 2023 Hardiness Zone: | Zone 7a: 0°F to 5°F |
| 2012 Hardiness Zone: | Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°F |
| 1990 Hardiness Zone: | Zone 6b: -5F to 0F |
| 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: | 64c - Piedmont Uplands |
| Heat Zone Days: | 8 - 14 days Over 86°F |
Annual Climate Data for ZIP Code 19390 - West Grove, PA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 22 | 23 | 30 | 39 | 49 | 59 | 64 | 62 | 55 | 43 | 35 | 27 | 42 |
| Avg Max Temp (°F) | 39 | 41 | 51 | 61 | 71 | 79 | 84 | 83 | 76 | 65 | 54 | 43 | 62 |
| Avg Precip (In.) | 3.76 | 2.92 | 3.95 | 3.73 | 4.45 | 4.03 | 4.43 | 3.89 | 4.53 | 3.41 | 3.66 | 3.61 | 46.38 |