| 2023 Hardiness Zone: | Zone 6b: -5°F to 0°F Zone 7a: 0°F to 5°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F |
| 1990 Hardiness Zone: | Zone 6a: -10F to -5F |
| 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: | 67b - Northern Shale Valleys |
| Heat Zone Days: | 8 - 14 days Over 86°F |
Annual Climate Data for ZIP Code 17238 - Needmore, PA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 20 | 22 | 29 | 38 | 48 | 56 | 61 | 59 | 52 | 40 | 32 | 25 | 40 |
| Avg Max Temp (°F) | 39 | 42 | 52 | 64 | 74 | 82 | 86 | 84 | 77 | 66 | 54 | 43 | 64 |
| Avg Precip (In.) | 2.74 | 2.35 | 3.38 | 3.33 | 3.98 | 3.71 | 3.67 | 3.42 | 3.41 | 3.12 | 3.16 | 2.8 | 39.07 |