Cochrane, Ontario climate data is summarized below. Average annual temperatures range from -3.7 °C (low) to 7.4 °C (high). Annual precipitation averages 685 Millimeters. Cochrane is located in USDA Plant Hardiness Zone 2b. The growing season typically runs from the last frost around Jun. 1 - Jun. 10 through the first frost around Sep.1 - Sep. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -21.81 °C | -10.95 °C | 0 mm |
| February | -22.25 °C | -9.96 °C | 0 mm |
| March | -14.79 °C | -2.02 °C | 0 mm |
| April | -5.67 °C | 5.63 °C | 32 mm |
| May | 2.76 °C | 16.14 °C | 87 mm |
| June | 8.88 °C | 22.27 °C | 95 mm |
| July | 12.2 °C | 23.91 °C | 125 mm |
| August | 11.4 °C | 22.99 °C | 125 mm |
| September | 6.48 °C | 17.8 °C | 104 mm |
| October | 0.78 °C | 9.32 °C | 92 mm |
| November | -5.93 °C | 1.39 °C | 25 mm |
| December | -16.46 °C | -7.66 °C | 0 mm |
| Annual | -3.7 °C | 7.4 °C | 685 mm |
| Average First Frost Date | Sep.1 - Sep. 10 |
| Average Last Frost Date | Jun. 1 - Jun. 10 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 2b : -42.8°C to -40°C |
| Current Drought Conditions | Normal |