Caledonia, New York has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 3.9 °C (low) to 14.2 °C (high). Annual precipitation averages 884.7 Millimeters. Caledonia is located in USDA Plant Hardiness Zone 6a. 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 | -8.3 °C | 0.3 °C | 58.93 mm |
| February | -8.1 °C | 1.2 °C | 45.97 mm |
| March | -4.2 °C | 5.8 °C | 64.01 mm |
| April | 1.8 °C | 13.2 °C | 74.93 mm |
| May | 8.2 °C | 20.3 °C | 78.99 mm |
| June | 13.4 °C | 25.1 °C | 87.63 mm |
| July | 16 °C | 27.3 °C | 89.15 mm |
| August | 15.1 °C | 26.4 °C | 84.84 mm |
| September | 11.2 °C | 22.9 °C | 80.01 mm |
| October | 5.6 °C | 15.9 °C | 86.36 mm |
| November | 0.2 °C | 9.1 °C | 69.6 mm |
| December | -4.5 °C | 3.2 °C | 64.26 mm |
| Annual | 3.9 °C | 14.2 °C | 884.68 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 6a : -23.3°C to -20.6°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 |