| 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 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: | 67b - Northern Shale Valleys | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | 1 - 7 days Over 86°F |
Annual Climate Data for ZIP Code 18080 - Slatington, PA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 19 | 21 | 29 | 38 | 48 | 57 | 62 | 60 | 52 | 40 | 33 | 24 | 40 |
| Avg Max Temp (°F) | 38 | 41 | 50 | 62 | 73 | 81 | 86 | 84 | 76 | 65 | 53 | 42 | 62 |
| Avg Precip (In.) | 3.3 | 2.55 | 3.51 | 3.53 | 4.69 | 4.25 | 4.18 | 4.2 | 4.49 | 3.42 | 3.69 | 3.35 | 45.16 |