| 2023 Hardiness Zone: | Zone 8a: 10°F to 15°F 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. 11 - Nov. 20 | |
| Average Last Frost Date: | Apr. 1 - Apr. 10 | |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate | |
| Ecoregion: | 63a - Delaware River Terraces and Uplands | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 15 - 30 days Over 86°F |
Annual Climate Data for ZIP Code 19153 - Philadelphia, PA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 25 | 27 | 34 | 43 | 54 | 63 | 68 | 67 | 60 | 48 | 39 | 30 | 46 |
| Avg Max Temp (°F) | 39 | 42 | 52 | 63 | 73 | 81 | 86 | 84 | 77 | 66 | 55 | 44 | 64 |
| Avg Precip (In.) | 3.65 | 2.8 | 3.91 | 3.64 | 4.05 | 3.6 | 4.42 | 3.98 | 4.01 | 2.9 | 3.33 | 3.43 | 43.72 |