Wheatley, Ontario climate data is summarized below. Average annual temperatures range from 43.6 °F (low) to 55.9 °F (high). Annual precipitation averages 23.8 Inches. 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 | -21.6 °F | -18.2 °F | 482.6 in. |
| February | -21.9 °F | -18.4 °F | 406.4 in. |
| March | -18.7 °F | -14.9 °F | 1270 in. |
| April | -15.5 °F | -11.3 °F | 1574.8 in. |
| May | -12 °F | -7.4 °F | 1752.6 in. |
| June | -8.6 °F | -4.4 °F | 1879.6 in. |
| July | -7.1 °F | -3 °F | 1778 in. |
| August | -7.3 °F | -3.4 °F | 1524 in. |
| September | -9.6 °F | -5.6 °F | 1574.8 in. |
| October | -12.7 °F | -9.1 °F | 1143 in. |
| November | -16.2 °F | -13 °F | 1117.6 in. |
| December | -19.1 °F | -16.3 °F | 863.6 in. |
| Annual | 43.6 °F | 55.9 °F | 23.82 in. |
| 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 : 0°F to 5°F |
| Current Drought Conditions | Normal |