Dover, Minnesota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 35.4 °F (low) to 54.1 °F (high). Annual precipitation averages 34.9 Inches. Dover is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 6.6 °F | 23.0 °F | 0.96 in. |
| February | 10.1 °F | 27.4 °F | 1.02 in. |
| March | 22.3 °F | 39.8 °F | 1.82 in. |
| April | 34.6 °F | 54.8 °F | 3.76 in. |
| May | 46.7 °F | 67.3 °F | 4.33 in. |
| June | 57.3 °F | 77.2 °F | 5.4 in. |
| July | 60.8 °F | 80.6 °F | 4.03 in. |
| August | 58.4 °F | 78.4 °F | 4.58 in. |
| September | 50.3 °F | 71.8 °F | 3.65 in. |
| October | 37.7 °F | 58.2 °F | 2.44 in. |
| November | 25.7 °F | 42.0 °F | 1.72 in. |
| December | 13.9 °F | 28.6 °F | 1.22 in. |
| Annual | 35.4 °F | 54.1 °F | 34.93 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4b : -25°F to -20°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |