| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F 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. 1 - Oct. 10 | |
| Average Last Frost Date: | May 11 - May 20 | |
| 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 18072 - Pen Argyl, PA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 16 | 17 | 26 | 35 | 45 | 54 | 59 | 58 | 50 | 38 | 30 | 22 | 38 |
| Avg Max Temp (°F) | 35 | 39 | 48 | 60 | 72 | 80 | 84 | 82 | 74 | 63 | 51 | 40 | 61 |
| Avg Precip (In.) | 3.91 | 2.99 | 3.88 | 3.92 | 4.87 | 4.46 | 4.33 | 4.33 | 4.74 | 3.75 | 4.05 | 3.87 | 49.08 |