Paris, Ontario climate data is summarized below. Average annual temperatures range from 38.1 °F (low) to 56.3 °F (high). Annual precipitation averages 26.1 Inches. Paris 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 | -22.6 °F | -18.5 °F | 203.2 in. |
| February | -23.5 °F | -18.7 °F | 254 in. |
| March | -20.2 °F | -14.7 °F | 1066.8 in. |
| April | -16.8 °F | -10.6 °F | 1473.2 in. |
| May | -13.4 °F | -6.6 °F | 1803.4 in. |
| June | -10.5 °F | -3.9 °F | 2133.6 in. |
| July | -9.3 °F | -2.5 °F | 2540 in. |
| August | -9.7 °F | -3.1 °F | 2514.6 in. |
| September | -11.9 °F | -5.4 °F | 1905 in. |
| October | -14.8 °F | -9.3 °F | 1346.2 in. |
| November | -18 °F | -13.3 °F | 889 in. |
| December | -20.4 °F | -16.9 °F | 711.2 in. |
| Annual | 38.1 °F | 56.3 °F | 26.1 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 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |