Dover, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 47.5 °F (low) to 72 °F (high). Annual precipitation averages 34.4 Inches. Dover is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 24.8 °F | 48.7 °F | 1.11 in. |
| February | 27.9 °F | 52.3 °F | 1.47 in. |
| March | 36.5 °F | 62.0 °F | 2.48 in. |
| April | 45.0 °F | 70.9 °F | 3.63 in. |
| May | 56.2 °F | 80.1 °F | 4.89 in. |
| June | 66.4 °F | 89.6 °F | 4.71 in. |
| July | 70.8 °F | 95.3 °F | 3.12 in. |
| August | 69.2 °F | 94.1 °F | 3.51 in. |
| September | 61.2 °F | 86.4 °F | 2.95 in. |
| October | 48.6 °F | 73.8 °F | 3.08 in. |
| November | 36.3 °F | 60.9 °F | 1.85 in. |
| December | 27.1 °F | 49.8 °F | 1.58 in. |
| Annual | 47.5 °F | 72 °F | 34.38 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |