| 2023 Hardiness Zone: | Zone 7b: 5°F to 10°F | |
| 2012 Hardiness Zone: | 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: | Apr. 11 - Apr. 20 | |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate | |
| Ecoregion: | 64c - Piedmont Uplands | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 15 - 30 days Over 86°F |
Annual Climate Data for ZIP Code 19115 - Philadelphia, PA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 22 | 24 | 31 | 40 | 50 | 60 | 65 | 63 | 56 | 44 | 35 | 27 | 43 |
| Avg Max Temp (°F) | 40 | 43 | 53 | 64 | 74 | 82 | 86 | 85 | 78 | 67 | 55 | 45 | 64 |
| Avg Precip (In.) | 3.82 | 2.92 | 4.07 | 3.9 | 4.55 | 3.98 | 4.95 | 4.63 | 4.51 | 3.41 | 3.69 | 3.65 | 48.07 |