| 2023 Hardiness Zone: | 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. 11 - Oct. 20 |
| Average Last Frost Date: | May 1 - May 10 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 64a - Triassic Lowlands |
| Heat Zone Days: | 8 - 14 days Over 86°F |
Annual Climate Data for ZIP Code 18076 - Red Hill, PA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 19 | 21 | 29 | 38 | 48 | 58 | 62 | 61 | 53 | 41 | 33 | 24 | 41 |
| Avg Max Temp (°F) | 37 | 40 | 50 | 61 | 72 | 80 | 85 | 83 | 76 | 65 | 53 | 42 | 62 |
| Avg Precip (In.) | 3.74 | 2.73 | 3.67 | 3.79 | 4.59 | 4.04 | 4.23 | 4.17 | 4.41 | 3.67 | 3.74 | 3.42 | 46.19 |