Carlisle, Ontario climate data is summarized below. Average annual temperatures range from 3.8 °C (low) to 13.8 °C (high). Annual precipitation averages 418 Millimeters. 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 | -8.47 °C | -1.23 °C | 5 mm |
| February | -10.02 °C | -1.42 °C | 0 mm |
| March | -4.04 °C | 5.73 °C | 22 mm |
| April | 2.27 °C | 13.66 °C | 32 mm |
| May | 8.38 °C | 20.77 °C | 50 mm |
| June | 13.44 °C | 25.21 °C | 68 mm |
| July | 15.79 °C | 27.47 °C | 74 mm |
| August | 15.21 °C | 26.8 °C | 67 mm |
| September | 11.15 °C | 22.68 °C | 48 mm |
| October | 6.06 °C | 15.46 °C | 28 mm |
| November | 0.29 °C | 8.34 °C | 16 mm |
| December | -4.12 °C | 1.9 °C | 8 mm |
| Annual | 3.8 °C | 13.8 °C | 418 mm |
| 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 : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |