Johnson City, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 37.6 °F (low) to 57.8 °F (high). Annual precipitation averages 41 Inches. Johnson City is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 15.7 °F | 31.9 °F | 2.75 in. |
| February | 16.4 °F | 34.3 °F | 2.2 in. |
| March | 23.4 °F | 43.2 °F | 3.16 in. |
| April | 34.2 °F | 56.9 °F | 3.47 in. |
| May | 45.5 °F | 69.2 °F | 3.44 in. |
| June | 54.6 °F | 77.6 °F | 3.96 in. |
| July | 59.2 °F | 81.0 °F | 4.05 in. |
| August | 57.9 °F | 80.3 °F | 4.14 in. |
| September | 50.9 °F | 73.1 °F | 3.91 in. |
| October | 39.7 °F | 60.8 °F | 3.93 in. |
| November | 30.3 °F | 47.4 °F | 2.94 in. |
| December | 22.9 °F | 37.3 °F | 3.03 in. |
| Annual | 37.6 °F | 57.8 °F | 40.98 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |