Speculator, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -0.5 °C (low) to 11.8 °C (high). Annual precipitation averages 1261.9 Millimeters. Speculator is located in USDA Plant Hardiness Zone 4b. 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 | -13.8 °C | -2.6 °C | 95 mm |
| February | -13.4 °C | -1.1 °C | 81.28 mm |
| March | -9.2 °C | 3.4 °C | 110.49 mm |
| April | -2.2 °C | 11.2 °C | 105.41 mm |
| May | 4.2 °C | 18.9 °C | 109.98 mm |
| June | 9.6 °C | 22.9 °C | 122.17 mm |
| July | 12.1 °C | 25.2 °C | 109.98 mm |
| August | 11.3 °C | 24.2 °C | 101.85 mm |
| September | 7.7 °C | 20.5 °C | 101.6 mm |
| October | 1.4 °C | 13.1 °C | 119.63 mm |
| November | -3.6 °C | 5.9 °C | 98.81 mm |
| December | -9.7 °C | -0.1 °C | 105.66 mm |
| Annual | -0.5 °C | 11.8 °C | 1261.86 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 4b : -31.7°C to -28.9°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 |