Wheatley, Ontario climate data is summarized below. Average annual temperatures range from 6.5 °C (low) to 13.3 °C (high). Annual precipitation averages 605 Millimeters. Wheatley is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6.83 °C | -0.8 °C | 19 mm |
| February | -7.46 °C | -1.05 °C | 16 mm |
| March | -1.67 °C | 5.22 °C | 50 mm |
| April | 4.04 °C | 11.71 °C | 62 mm |
| May | 10.45 °C | 18.63 °C | 69 mm |
| June | 16.55 °C | 24.12 °C | 74 mm |
| July | 19.2 °C | 26.62 °C | 70 mm |
| August | 18.88 °C | 25.86 °C | 60 mm |
| September | 14.74 °C | 21.98 °C | 62 mm |
| October | 9.21 °C | 15.71 °C | 45 mm |
| November | 2.79 °C | 8.65 °C | 44 mm |
| December | -2.33 °C | 2.63 °C | 34 mm |
| Annual | 6.5 °C | 13.3 °C | 605 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Normal |