Oxford, Connecticut has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 40.3 °F (low) to 59.1 °F (high). Annual precipitation averages 52.3 Inches. 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 | 18.4 °F | 35.3 °F | 3.98 in. |
| February | 19.8 °F | 37.8 °F | 3.29 in. |
| March | 27.2 °F | 45.6 °F | 4.62 in. |
| April | 37.5 °F | 57.8 °F | 4.3 in. |
| May | 47.5 °F | 68.7 °F | 4.14 in. |
| June | 56.8 °F | 77.0 °F | 4.7 in. |
| July | 62.1 °F | 81.9 °F | 4.42 in. |
| August | 60.7 °F | 80.2 °F | 4.4 in. |
| September | 53.7 °F | 73.0 °F | 4.53 in. |
| October | 42.2 °F | 61.6 °F | 5.15 in. |
| November | 32.8 °F | 50.7 °F | 4.24 in. |
| December | 24.3 °F | 40.0 °F | 4.5 in. |
| Annual | 40.3 °F | 59.1 °F | 52.27 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |