| 2023 Hardiness Zone: | Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°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. 21 - Apr. 30 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 64c - Piedmont Uplands |
| Heat Zone Days: | 15 - 30 days Over 86°F |
Annual Climate Data for ZIP Code 19047 - Langhorne, PA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 21 | 22 | 30 | 39 | 49 | 59 | 64 | 62 | 55 | 42 | 34 | 26 | 42 |
| Avg Max Temp (°F) | 40 | 43 | 53 | 63 | 73 | 82 | 87 | 85 | 78 | 67 | 55 | 45 | 64 |
| Avg Precip (In.) | 3.84 | 2.95 | 4.14 | 3.92 | 4.71 | 4.06 | 5.2 | 4.7 | 4.77 | 3.44 | 3.81 | 3.71 | 49.25 |