Stayner, Ontario climate data is summarized below. Average annual temperatures range from 36.1 °F (low) to 53.6 °F (high). Annual precipitation averages 15.9 Inches. Stayner 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 | -23.4 °F | -19.1 °F | 25.4 in. |
| February | -23.9 °F | -19.5 °F | 0 in. |
| March | -20.8 °F | -15.8 °F | 381 in. |
| April | -17.5 °F | -11.5 °F | 685.8 in. |
| May | -14.3 °F | -7.5 °F | 1295.4 in. |
| June | -11.3 °F | -5 °F | 1549.4 in. |
| July | -9.8 °F | -3.5 °F | 2133.6 in. |
| August | -10.1 °F | -3.9 °F | 1981.2 in. |
| September | -12.4 °F | -6.2 °F | 1066.8 in. |
| October | -15 °F | -9.9 °F | 635 in. |
| November | -18.3 °F | -13.7 °F | 355.6 in. |
| December | -21.2 °F | -17.5 °F | 152.4 in. |
| Annual | 36.1 °F | 53.6 °F | 15.9 in. |
| 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 : -15°F to -10°F |
| Current Drought Conditions | Normal |