Oxford, Massachusetts has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 3.5 °C (low) to 15.1 °C (high). Annual precipitation averages 1266.9 Millimeters. Oxford 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 | -8.8 °C | 1.8 °C | 96.77 mm |
| February | -8.2 °C | 3.1 °C | 80.77 mm |
| March | -3.9 °C | 7.4 °C | 113.28 mm |
| April | 1.8 °C | 14.3 °C | 113.28 mm |
| May | 7.7 °C | 20.3 °C | 91.44 mm |
| June | 12.8 °C | 24.8 °C | 110.49 mm |
| July | 16.1 °C | 27.8 °C | 100.84 mm |
| August | 15.1 °C | 26.8 °C | 109.98 mm |
| September | 10.9 °C | 23 °C | 109.47 mm |
| October | 4.6 °C | 16.3 °C | 128.52 mm |
| November | -0.6 °C | 10.4 °C | 97.03 mm |
| December | -5.3 °C | 4.7 °C | 115.06 mm |
| Annual | 3.5 °C | 15.1 °C | 1266.93 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 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |