| 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 Zone 5b: -15°F to -10°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: | Rare Over 86°F |
Annual Climate Data for ZIP Code 17752 - Montgomery, PA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 17 | 19 | 27 | 36 | 46 | 55 | 60 | 59 | 51 | 40 | 32 | 23 | 39 |
| Avg Max Temp (°F) | 33 | 37 | 47 | 60 | 71 | 79 | 83 | 81 | 73 | 62 | 49 | 38 | 59 |
| Avg Precip (In.) | 2.96 | 2.6 | 3.28 | 3.56 | 3.92 | 4.63 | 4.06 | 3.51 | 4.02 | 3.31 | 3.61 | 3.05 | 42.5 |