Owen Sound, Ontario climate data is summarized below. Average annual temperatures range from 37.2 °F (low) to 53.3 °F (high). Annual precipitation averages 26.9 Inches. Owen Sound is located in USDA Plant Hardiness Zone 6a. 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 | -22.9 °F | -19.1 °F | 0 in. |
| February | -23.9 °F | -19.5 °F | 0 in. |
| March | -20.7 °F | -15.9 °F | 762 in. |
| April | -17.2 °F | -11.8 °F | 1828.8 in. |
| May | -14 °F | -7.8 °F | 2286 in. |
| June | -11.2 °F | -5.1 °F | 2235.2 in. |
| July | -9.6 °F | -3.8 °F | 1549.4 in. |
| August | -9.8 °F | -4 °F | 2159 in. |
| September | -11.9 °F | -6.3 °F | 2133.6 in. |
| October | -14.5 °F | -10 °F | 2616.2 in. |
| November | -17.7 °F | -13.7 °F | 1549.4 in. |
| December | -20.7 °F | -17.5 °F | 228.6 in. |
| Annual | 37.2 °F | 53.3 °F | 26.88 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |