Cayuga, Ontario climate data is summarized below. Average annual temperatures range from 39.6 °F (low) to 56.2 °F (high). Annual precipitation averages 31.3 Inches. Cayuga is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -22.2 °F | -18.2 °F | 711.2 in. |
| February | -23 °F | -18.5 °F | 736.6 in. |
| March | -19.7 °F | -14.7 °F | 1828.8 in. |
| April | -16.6 °F | -10.8 °F | 2133.6 in. |
| May | -13.2 °F | -6.9 °F | 2133.6 in. |
| June | -10.1 °F | -4.3 °F | 1778 in. |
| July | -8.8 °F | -2.9 °F | 2362.2 in. |
| August | -9.1 °F | -3.3 °F | 1879.6 in. |
| September | -11.3 °F | -5.6 °F | 1778 in. |
| October | -14.2 °F | -9.3 °F | 1905 in. |
| November | -17.3 °F | -13 °F | 1447.8 in. |
| December | -19.8 °F | -16.4 °F | 1524 in. |
| Annual | 39.6 °F | 56.2 °F | 31.33 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Normal |