Old Forge, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 30.6 °F (low) to 52.3 °F (high). Annual precipitation averages 51.3 Inches. Old Forge is located in USDA Plant Hardiness Zone 4a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 4.6 °F | 26.2 °F | 4.32 in. |
| February | 5.5 °F | 29.0 °F | 3.31 in. |
| March | 14.1 °F | 37.3 °F | 3.3 in. |
| April | 28.3 °F | 50.5 °F | 3.86 in. |
| May | 40.4 °F | 64.4 °F | 4.42 in. |
| June | 49.8 °F | 72.0 °F | 4.78 in. |
| July | 54.0 °F | 76.0 °F | 4.23 in. |
| August | 52.5 °F | 75.1 °F | 4.45 in. |
| September | 45.3 °F | 68.3 °F | 4.23 in. |
| October | 34.6 °F | 55.1 °F | 5.45 in. |
| November | 24.6 °F | 42.3 °F | 4.43 in. |
| December | 13.2 °F | 31.1 °F | 4.47 in. |
| Annual | 30.6 °F | 52.3 °F | 51.25 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 4a : -30°F to -25°F |
| Plant Hardiness Zone - 2012 | Zone 3b : -35°F to -30°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |