Shorewood, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 40.4 °F (low) to 56.5 °F (high). Annual precipitation averages 35.3 Inches. Shorewood is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 16.2 °F | 30.5 °F | 1.65 in. |
| February | 18.7 °F | 33.5 °F | 1.47 in. |
| March | 27.3 °F | 42.9 °F | 1.95 in. |
| April | 36.9 °F | 53.6 °F | 3.91 in. |
| May | 47.0 °F | 65.4 °F | 3.98 in. |
| June | 57.4 °F | 75.3 °F | 4.77 in. |
| July | 63.6 °F | 80.7 °F | 3.75 in. |
| August | 63.5 °F | 79.7 °F | 3.59 in. |
| September | 55.6 °F | 72.7 °F | 3.34 in. |
| October | 44.2 °F | 60.5 °F | 2.85 in. |
| November | 32.5 °F | 47.3 °F | 2.13 in. |
| December | 22.3 °F | 35.6 °F | 1.91 in. |
| Annual | 40.4 °F | 56.5 °F | 35.3 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |