Chain O' Lakes, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 34.8 °F (low) to 55.1 °F (high). Annual precipitation averages 33.6 Inches. Chain O' Lakes is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 8.3 °F | 25.2 °F | 1.34 in. |
| February | 10.6 °F | 29.4 °F | 1.14 in. |
| March | 21.2 °F | 41.1 °F | 1.9 in. |
| April | 33.1 °F | 55.1 °F | 3.43 in. |
| May | 45.3 °F | 67.8 °F | 4.04 in. |
| June | 55.4 °F | 77.2 °F | 4.62 in. |
| July | 59.3 °F | 81.8 °F | 3.67 in. |
| August | 57.3 °F | 79.5 °F | 3.82 in. |
| September | 48.9 °F | 71.8 °F | 3.38 in. |
| October | 37.1 °F | 58.2 °F | 2.68 in. |
| November | 26.2 °F | 43.3 °F | 1.92 in. |
| December | 15.2 °F | 30.4 °F | 1.69 in. |
| Annual | 34.8 °F | 55.1 °F | 33.63 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |