Uxbridge, Ontario climate data is summarized below. Average annual temperatures range from 2.4 °C (low) to 11.9 °C (high). Annual precipitation averages 862 Millimeters. Uxbridge is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -10.83 °C | -2.79 °C | 15 mm |
| February | -11.91 °C | -3.24 °C | 5 mm |
| March | -6.07 °C | 3.4 °C | 53 mm |
| April | 1.19 °C | 11.27 °C | 82 mm |
| May | 7.62 °C | 18.84 °C | 107 mm |
| June | 12.6 °C | 23.37 °C | 120 mm |
| July | 15.1 °C | 25.93 °C | 104 mm |
| August | 14.38 °C | 24.95 °C | 128 mm |
| September | 9.87 °C | 20.45 °C | 79 mm |
| October | 4.75 °C | 13.25 °C | 74 mm |
| November | -1.12 °C | 6.68 °C | 55 mm |
| December | -6.63 °C | -0.09 °C | 40 mm |
| Annual | 2.4 °C | 11.9 °C | 862 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |