Paris, Ontario climate data is summarized below. Average annual temperatures range from 3.4 °C (low) to 13.5 °C (high). Annual precipitation averages 663 Millimeters. 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 | -8.67 °C | -1.38 °C | 8 mm |
| February | -10.25 °C | -1.7 °C | 10 mm |
| March | -4.27 °C | 5.56 °C | 42 mm |
| April | 1.75 °C | 13.01 °C | 58 mm |
| May | 7.93 °C | 20.2 °C | 71 mm |
| June | 13.18 °C | 24.9 °C | 84 mm |
| July | 15.29 °C | 27.46 °C | 100 mm |
| August | 14.62 °C | 26.51 °C | 99 mm |
| September | 10.53 °C | 22.22 °C | 75 mm |
| October | 5.38 °C | 15.23 °C | 53 mm |
| November | -0.36 °C | 8.07 °C | 35 mm |
| December | -4.76 °C | 1.64 °C | 28 mm |
| Annual | 3.4 °C | 13.5 °C | 663 mm |
| 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 : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |