Oxford, Maine has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1.8 °C (low) to 13 °C (high). Annual precipitation averages 1251.7 Millimeters. Oxford is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -12.3 °C | -1.4 °C | 85.6 mm |
| February | -11.7 °C | 0.2 °C | 83.82 mm |
| March | -6.1 °C | 5 °C | 96.52 mm |
| April | 0.3 °C | 11.9 °C | 109.98 mm |
| May | 6.4 °C | 18.7 °C | 95 mm |
| June | 12 °C | 23.3 °C | 123.7 mm |
| July | 15.1 °C | 26.7 °C | 102.36 mm |
| August | 14.2 °C | 26.1 °C | 96.77 mm |
| September | 9.9 °C | 21.8 °C | 97.03 mm |
| October | 3.6 °C | 14.5 °C | 139.7 mm |
| November | -1.9 °C | 7.8 °C | 109.47 mm |
| December | -7.8 °C | 1.8 °C | 111.76 mm |
| Annual | 1.8 °C | 13 °C | 1251.71 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |