Schroon Lake, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 0.8 °C (low) to 13.2 °C (high). Annual precipitation averages 1142.2 Millimeters. Schroon Lake is located in USDA Plant Hardiness Zone 5a. 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 | -12.9 °C | -1.8 °C | 80.52 mm |
| February | -12.4 °C | 0 °C | 59.44 mm |
| March | -7.2 °C | 4.7 °C | 87.63 mm |
| April | -0.8 °C | 12.8 °C | 86.36 mm |
| May | 6 °C | 19.9 °C | 101.6 mm |
| June | 10.9 °C | 24.6 °C | 114.55 mm |
| July | 14 °C | 27.1 °C | 115.82 mm |
| August | 13.1 °C | 26.2 °C | 107.19 mm |
| September | 8.7 °C | 22.1 °C | 94.23 mm |
| October | 2.4 °C | 14.7 °C | 115.57 mm |
| November | -3.1 °C | 7.2 °C | 86.11 mm |
| December | -8.7 °C | 1.1 °C | 93.22 mm |
| Annual | 0.8 °C | 13.2 °C | 1142.24 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |