Timmins, Ontario climate data is summarized below. Average annual temperatures range from -3.2 °C (low) to 7.9 °C (high). Annual precipitation averages 639 Millimeters. Timmins is located in USDA Plant Hardiness Zone 3a. 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 | -20.55 °C | -9.91 °C | 0 mm |
| February | -20.87 °C | -8.8 °C | 0 mm |
| March | -13.19 °C | -0.59 °C | 0 mm |
| April | -4.45 °C | 6.87 °C | 28 mm |
| May | 3.19 °C | 16.5 °C | 88 mm |
| June | 8.79 °C | 22.05 °C | 87 mm |
| July | 11.61 °C | 23.63 °C | 114 mm |
| August | 10.94 °C | 22.73 °C | 107 mm |
| September | 6.27 °C | 17.7 °C | 107 mm |
| October | 0.92 °C | 9.68 °C | 88 mm |
| November | -5.49 °C | 2.11 °C | 20 mm |
| December | -15.34 °C | -6.85 °C | 0 mm |
| Annual | -3.2 °C | 7.9 °C | 639 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 3a : -40°C to -37.2°C |
| Current Drought Conditions | Normal |