Saranac Lake, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 30.8 °F (low) to 52.5 °F (high). Annual precipitation averages 43.1 Inches. Saranac Lake is located in USDA Plant Hardiness Zone 4a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 5.2 °F | 26.0 °F | 2.87 in. |
| February | 6.4 °F | 28.8 °F | 2.3 in. |
| March | 15.1 °F | 37.2 °F | 2.81 in. |
| April | 28.3 °F | 51.0 °F | 3.2 in. |
| May | 39.7 °F | 64.7 °F | 3.71 in. |
| June | 49.4 °F | 73.1 °F | 4.58 in. |
| July | 54.0 °F | 77.0 °F | 4.26 in. |
| August | 52.3 °F | 75.3 °F | 4.14 in. |
| September | 44.8 °F | 68.9 °F | 3.86 in. |
| October | 35.2 °F | 55.0 °F | 4.56 in. |
| November | 25.2 °F | 42.0 °F | 3.37 in. |
| December | 13.6 °F | 30.8 °F | 3.41 in. |
| Annual | 30.8 °F | 52.5 °F | 43.07 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4a : -30°F to -25°F |
| Plant Hardiness Zone - 2012 | Zone 4a : -30°F to -25°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |