Dresden, Ontario climate data is summarized below. Average annual temperatures range from 4.3 °C (low) to 14.1 °C (high). Annual precipitation averages 413 Millimeters. Dresden is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -8.22 °C | -0.97 °C | 13 mm |
| February | -9.04 °C | -1.21 °C | 4 mm |
| March | -2.55 °C | 6.43 °C | 26 mm |
| April | 2.71 °C | 13.89 °C | 44 mm |
| May | 8.96 °C | 20.79 °C | 53 mm |
| June | 14.07 °C | 25.83 °C | 49 mm |
| July | 16.33 °C | 27.76 °C | 49 mm |
| August | 15.52 °C | 26.76 °C | 54 mm |
| September | 11.13 °C | 22.54 °C | 39 mm |
| October | 6.19 °C | 15.96 °C | 34 mm |
| November | 0.65 °C | 8.7 °C | 31 mm |
| December | -3.92 °C | 2.25 °C | 17 mm |
| Annual | 4.3 °C | 14.1 °C | 413 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Normal |