Vandorf, Ontario climate data is summarized below. Average annual temperatures range from 2.9 °C (low) to 12.2 °C (high). Annual precipitation averages 850 Millimeters. Vandorf 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 | -10.07 °C | -2.36 °C | 15 mm |
| February | -11.18 °C | -2.76 °C | 7 mm |
| March | -5.61 °C | 3.91 °C | 53 mm |
| April | 1.45 °C | 11.57 °C | 82 mm |
| May | 7.74 °C | 19.06 °C | 110 mm |
| June | 12.75 °C | 23.63 °C | 103 mm |
| July | 15.36 °C | 26.2 °C | 123 mm |
| August | 14.75 °C | 25.29 °C | 115 mm |
| September | 10.36 °C | 20.77 °C | 79 mm |
| October | 5.16 °C | 13.57 °C | 70 mm |
| November | -0.67 °C | 6.99 °C | 54 mm |
| December | -5.99 °C | 0.37 °C | 39 mm |
| Annual | 2.9 °C | 12.2 °C | 850 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 |