| 2023 Hardiness Zone: | Zone 7b: 5°F to 10°F | |
| 2012 Hardiness Zone: | Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F | |
| 1990 Hardiness Zone: | Zone 7a: 0F to 5F | |
| Average First Frost Date: | Nov. 1 - Nov. 10 | |
| Average Last Frost Date: | Apr. 11 - Apr. 20 | |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers | |
| Ecoregion: | 64c - Piedmont Uplands | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 15 - 30 days Over 86°F |
Annual Climate Data for ZIP Code 19086 - Wallingford, PA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 25 | 27 | 34 | 43 | 53 | 63 | 68 | 67 | 59 | 48 | 39 | 30 | 46 |
| Avg Max Temp (°F) | 39 | 43 | 52 | 63 | 73 | 82 | 86 | 84 | 77 | 66 | 55 | 44 | 64 |
| Avg Precip (In.) | 3.51 | 2.91 | 4.03 | 3.65 | 4.23 | 3.68 | 4.34 | 3.88 | 4.23 | 3.13 | 3.51 | 3.49 | 44.6 |