Spencerport, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 4.4 °C (low) to 14.1 °C (high). Annual precipitation averages 837 Millimeters. Spencerport is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -7.8 °C | 0.4 °C | 57.15 mm |
| February | -7.6 °C | 1.2 °C | 44.2 mm |
| March | -3.6 °C | 5.6 °C | 60.71 mm |
| April | 2.3 °C | 12.9 °C | 74.17 mm |
| May | 8.6 °C | 19.9 °C | 74.17 mm |
| June | 14 °C | 24.7 °C | 80.26 mm |
| July | 16.7 °C | 27 °C | 83.06 mm |
| August | 15.9 °C | 26.3 °C | 75.44 mm |
| September | 12 °C | 22.6 °C | 77.98 mm |
| October | 6.2 °C | 15.8 °C | 81.79 mm |
| November | 0.7 °C | 9.2 °C | 64.77 mm |
| December | -4.1 °C | 3.3 °C | 63.25 mm |
| Annual | 4.4 °C | 14.1 °C | 836.95 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |