Ignace, Ontario climate data is summarized below. Average annual temperatures range from -2.9 °C (low) to 7.2 °C (high). Annual precipitation averages 591 Millimeters. Ignace is located in USDA Plant Hardiness Zone 3b. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -21.05 °C | -11.59 °C | 0 mm |
| February | -20.65 °C | -9.39 °C | 0 mm |
| March | -11.43 °C | -0.61 °C | 0 mm |
| April | -3.72 °C | 7.14 °C | 14 mm |
| May | 3.6 °C | 15.64 °C | 97 mm |
| June | 10.01 °C | 21.17 °C | 118 mm |
| July | 12.71 °C | 23.54 °C | 124 mm |
| August | 11.71 °C | 22.87 °C | 85 mm |
| September | 7.26 °C | 17.55 °C | 89 mm |
| October | 1.41 °C | 9.38 °C | 63 mm |
| November | -6.58 °C | 0.23 °C | 1 mm |
| December | -17.61 °C | -9.53 °C | 0 mm |
| Annual | -2.9 °C | 7.2 °C | 591 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 3b : -37.2°C to -34.4°C |
| Current Drought Conditions | Normal |