Maplewood, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 36.1 °F (low) to 54.5 °F (high). Annual precipitation averages 34.5 Inches. Maplewood is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 6.9 °F | 22.9 °F | 1.04 in. |
| February | 10.0 °F | 27.7 °F | 0.95 in. |
| March | 22.0 °F | 40.7 °F | 1.77 in. |
| April | 35.2 °F | 55.5 °F | 3.17 in. |
| May | 47.8 °F | 68.1 °F | 4.3 in. |
| June | 58.3 °F | 77.7 °F | 5.01 in. |
| July | 62.9 °F | 81.9 °F | 4.28 in. |
| August | 60.1 °F | 79.8 °F | 4.47 in. |
| September | 51.7 °F | 72.2 °F | 3.43 in. |
| October | 38.6 °F | 57.6 °F | 2.98 in. |
| November | 25.9 °F | 41.7 °F | 1.72 in. |
| December | 13.7 °F | 28.1 °F | 1.38 in. |
| Annual | 36.1 °F | 54.5 °F | 34.5 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |