| 2023 Hardiness Zone: | Zone 7b: 5°F to 10°F | |
| 2012 Hardiness Zone: | Zone 7b: 5°F to 10°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: | 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 19145 - Philadelphia, 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 | 60 | 48 | 39 | 30 | 46 |
| Avg Max Temp (°F) | 40 | 43 | 52 | 63 | 73 | 82 | 86 | 85 | 78 | 67 | 55 | 45 | 64 |
| Avg Precip (In.) | 3.7 | 2.81 | 3.97 | 3.73 | 4.16 | 3.72 | 4.45 | 4.18 | 4.03 | 3.06 | 3.4 | 3.48 | 44.69 |