Midland, Ontario climate data is summarized below. Average annual temperatures range from 2.6 °C (low) to 11.3 °C (high). Annual precipitation averages 234 Millimeters. Midland is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -10.86 °C | -2.99 °C | 4 mm |
| February | -12.09 °C | -3.62 °C | 0 mm |
| March | -6.14 °C | 2.3 °C | 10 mm |
| April | 0.58 °C | 10.16 °C | 20 mm |
| May | 6.56 °C | 17.58 °C | 24 mm |
| June | 12.07 °C | 22.21 °C | 34 mm |
| July | 15.29 °C | 24.8 °C | 49 mm |
| August | 15.12 °C | 24.2 °C | 43 mm |
| September | 11.09 °C | 20.34 °C | 22 mm |
| October | 6.03 °C | 13.51 °C | 16 mm |
| November | 0.09 °C | 6.95 °C | 9 mm |
| December | -6.18 °C | -0.02 °C | 3 mm |
| Annual | 2.6 °C | 11.3 °C | 234 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |