| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F | |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 5b: -15°F to -10°F | |
| 1990 Hardiness Zone: | Zone 6a: -10F to -5F | |
| Average First Frost Date: | Oct. 1 - Oct. 10 | |
| Average Last Frost Date: | May 11 - May 20 | |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year | |
| Ecoregion: | 67k - Northern Glaciated Shale and Slate Valleys | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 07860 - Newton, NJ | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 16 | 17 | 27 | 36 | 46 | 55 | 60 | 58 | 50 | 38 | 31 | 22 | 38 |
| Avg Max Temp (°F) | 35 | 38 | 48 | 59 | 71 | 79 | 83 | 81 | 74 | 63 | 51 | 40 | 60 |
| Avg Precip (In.) | 3.61 | 2.74 | 3.75 | 4.09 | 4.46 | 4.47 | 4.42 | 4.33 | 4.47 | 3.66 | 3.83 | 3.47 | 47.31 |