Howard Lake, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 34.8 °F (low) to 53.8 °F (high). Annual precipitation averages 31 Inches. Howard Lake is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 4.6 °F | 21.7 °F | 0.76 in. |
| February | 7.6 °F | 26.3 °F | 0.83 in. |
| March | 20.6 °F | 38.9 °F | 1.51 in. |
| April | 34.0 °F | 54.5 °F | 2.76 in. |
| May | 47.0 °F | 67.7 °F | 4.14 in. |
| June | 57.8 °F | 77.3 °F | 4.76 in. |
| July | 61.9 °F | 81.7 °F | 3.82 in. |
| August | 59.2 °F | 79.3 °F | 4.32 in. |
| September | 50.8 °F | 72.2 °F | 3.18 in. |
| October | 37.8 °F | 57.4 °F | 2.42 in. |
| November | 24.9 °F | 41.0 °F | 1.43 in. |
| December | 11.9 °F | 27.1 °F | 1.07 in. |
| Annual | 34.8 °F | 53.8 °F | 31 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 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 | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |