Rensselaerville, 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 13.3 °C (high). Annual precipitation averages 1093.7 Millimeters. Rensselaerville is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -11.6 °C | -0.3 °C | 70.1 mm |
| February | -11.1 °C | 1.2 °C | 61.98 mm |
| March | -7.1 °C | 5.2 °C | 83.31 mm |
| April | -0.7 °C | 12.6 °C | 87.63 mm |
| May | 5.4 °C | 19.2 °C | 89.15 mm |
| June | 10.3 °C | 23.6 °C | 115.32 mm |
| July | 12.7 °C | 25.9 °C | 99.06 mm |
| August | 11.8 °C | 25.2 °C | 103.12 mm |
| September | 7.9 °C | 21.6 °C | 96.01 mm |
| October | 2.1 °C | 14.7 °C | 128.78 mm |
| November | -2.8 °C | 8.1 °C | 74.93 mm |
| December | -7.7 °C | 2.2 °C | 84.33 mm |
| Annual | 0.8 °C | 13.3 °C | 1093.72 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |