Toronto, Ontario climate data is summarized below. Average annual temperatures range from 5.4 °C (low) to 13.1 °C (high). Annual precipitation averages 902 Millimeters. Toronto is located in USDA Plant Hardiness Zone 7a. 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 | -6.87 °C | -0.51 °C | 27 mm |
| February | -8.04 °C | -0.9 °C | 33 mm |
| March | -2.37 °C | 5.3 °C | 76 mm |
| April | 3.39 °C | 11.6 °C | 93 mm |
| May | 9.44 °C | 18.34 °C | 88 mm |
| June | 14.79 °C | 23.56 °C | 98 mm |
| July | 17.67 °C | 26.59 °C | 97 mm |
| August | 17.45 °C | 26.05 °C | 98 mm |
| September | 13.21 °C | 21.71 °C | 70 mm |
| October | 7.53 °C | 14.74 °C | 88 mm |
| November | 1.83 °C | 8.31 °C | 72 mm |
| December | -3.01 °C | 2.34 °C | 62 mm |
| Annual | 5.4 °C | 13.1 °C | 902 mm |
| 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 7a : -17.8°C to -15°C |
| Current Drought Conditions | Normal |