Baldwin, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 33.3 °F (low) to 53 °F (high). Annual precipitation averages 33.3 Inches. Baldwin 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 | 3.8 °F | 21.7 °F | 0.85 in. |
| February | 6.9 °F | 26.6 °F | 0.82 in. |
| March | 19.5 °F | 39.1 °F | 1.57 in. |
| April | 32.3 °F | 53.8 °F | 2.83 in. |
| May | 45.0 °F | 66.7 °F | 4.03 in. |
| June | 55.3 °F | 75.8 °F | 5.27 in. |
| July | 59.4 °F | 80.1 °F | 4.22 in. |
| August | 57.0 °F | 78.0 °F | 4.76 in. |
| September | 49.0 °F | 70.5 °F | 3.48 in. |
| October | 36.2 °F | 56.2 °F | 2.73 in. |
| November | 24.0 °F | 40.4 °F | 1.61 in. |
| December | 11.3 °F | 26.9 °F | 1.13 in. |
| Annual | 33.3 °F | 53 °F | 33.3 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 | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |