Elmvale, Ontario climate data is summarized below. Average annual temperatures range from 2 °C (low) to 12.3 °C (high). Annual precipitation averages 342 Millimeters. Elmvale is located in USDA Plant Hardiness Zone 5b. 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 | -11.13 °C | -2.62 °C | 5 mm |
| February | -12.18 °C | -3.02 °C | 0 mm |
| March | -6.25 °C | 3.83 °C | 12 mm |
| April | 0.4 °C | 11.79 °C | 27 mm |
| May | 6.24 °C | 19.1 °C | 39 mm |
| June | 11.63 °C | 23.49 °C | 54 mm |
| July | 14.42 °C | 26.17 °C | 78 mm |
| August | 13.92 °C | 25.45 °C | 56 mm |
| September | 9.71 °C | 21.27 °C | 30 mm |
| October | 4.82 °C | 14.09 °C | 24 mm |
| November | -1.02 °C | 7.35 °C | 13 mm |
| December | -6.78 °C | 0.2 °C | 4 mm |
| Annual | 2 °C | 12.3 °C | 342 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 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |