Carlisle, Ontario climate data is summarized below. Average annual temperatures range from 38.9 °F (low) to 56.8 °F (high). Annual precipitation averages 16.5 Inches. Carlisle is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -22.5 °F | -18.5 °F | 127 in. |
| February | -23.3 °F | -18.6 °F | 0 in. |
| March | -20 °F | -14.6 °F | 558.8 in. |
| April | -16.5 °F | -10.2 °F | 812.8 in. |
| May | -13.1 °F | -6.2 °F | 1270 in. |
| June | -10.3 °F | -3.8 °F | 1727.2 in. |
| July | -9 °F | -2.5 °F | 1879.6 in. |
| August | -9.3 °F | -2.9 °F | 1701.8 in. |
| September | -11.6 °F | -5.2 °F | 1219.2 in. |
| October | -14.4 °F | -9.2 °F | 711.2 in. |
| November | -17.6 °F | -13.1 °F | 406.4 in. |
| December | -20.1 °F | -16.7 °F | 203.2 in. |
| Annual | 38.9 °F | 56.8 °F | 16.46 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |