Uxbridge, Massachusetts has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 4.2 °C (low) to 15.2 °C (high). Annual precipitation averages 1265.7 Millimeters. Uxbridge is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -8 °C | 2.1 °C | 99.06 mm |
| February | -7.3 °C | 3.4 °C | 88.65 mm |
| March | -3.1 °C | 7.6 °C | 120.4 mm |
| April | 2.6 °C | 14.4 °C | 114.81 mm |
| May | 8.2 °C | 20.3 °C | 89.15 mm |
| June | 13.3 °C | 24.8 °C | 106.17 mm |
| July | 16.6 °C | 27.8 °C | 94.74 mm |
| August | 15.7 °C | 26.9 °C | 102.87 mm |
| September | 11.7 °C | 23.2 °C | 100.33 mm |
| October | 5.4 °C | 16.7 °C | 125.22 mm |
| November | 0 °C | 10.7 °C | 100.08 mm |
| December | -4.7 °C | 5 °C | 124.21 mm |
| Annual | 4.2 °C | 15.2 °C | 1265.69 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |