Port Elgin, Ontario climate data is summarized below. Average annual temperatures range from 4.2 °C (low) to 10.6 °C (high). Annual precipitation averages 698 Millimeters. Port Elgin is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -7.44 °C | -1.5 °C | 0 mm |
| February | -9.51 °C | -2.62 °C | 0 mm |
| March | -4.35 °C | 2.73 °C | 37 mm |
| April | 1.3 °C | 8.48 °C | 73 mm |
| May | 6.46 °C | 13.74 °C | 87 mm |
| June | 11.54 °C | 18.48 °C | 86 mm |
| July | 15.78 °C | 22.27 °C | 55 mm |
| August | 16.27 °C | 22.88 °C | 73 mm |
| September | 12.61 °C | 19.65 °C | 86 mm |
| October | 7.91 °C | 13.91 °C | 109 mm |
| November | 2.27 °C | 7.83 °C | 63 mm |
| December | -3.1 °C | 1.79 °C | 29 mm |
| Annual | 4.2 °C | 10.6 °C | 698 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |