Vienna, New Jersey has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 40.3 °F (low) to 61 °F (high). Annual precipitation averages 50.7 Inches. Vienna is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 18.4 °F | 36.6 °F | 3.61 in. |
| February | 19.8 °F | 39.6 °F | 2.93 in. |
| March | 27.4 °F | 47.7 °F | 3.98 in. |
| April | 38.4 °F | 60.6 °F | 3.9 in. |
| May | 48.4 °F | 70.5 °F | 4.17 in. |
| June | 57.3 °F | 78.8 °F | 5.03 in. |
| July | 62.2 °F | 83.6 °F | 4.75 in. |
| August | 60.5 °F | 81.7 °F | 4.91 in. |
| September | 53.2 °F | 75.0 °F | 4.91 in. |
| October | 41.6 °F | 63.5 °F | 4.72 in. |
| November | 31.7 °F | 52.1 °F | 3.48 in. |
| December | 24.4 °F | 41.8 °F | 4.26 in. |
| Annual | 40.3 °F | 61 °F | 50.65 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |