Packwaukee, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 35.4 °F (low) to 56.3 °F (high). Annual precipitation averages 35.8 Inches. Packwaukee 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 | 8.4 °F | 26.7 °F | 1.36 in. |
| February | 11.2 °F | 31.1 °F | 1.27 in. |
| March | 22.0 °F | 42.9 °F | 1.92 in. |
| April | 33.8 °F | 56.3 °F | 3.7 in. |
| May | 46.1 °F | 68.8 °F | 4.29 in. |
| June | 56.1 °F | 78.2 °F | 5.12 in. |
| July | 60.0 °F | 82.1 °F | 4.22 in. |
| August | 57.8 °F | 80.2 °F | 3.96 in. |
| September | 49.2 °F | 72.8 °F | 3.47 in. |
| October | 37.6 °F | 59.6 °F | 2.83 in. |
| November | 26.5 °F | 44.7 °F | 2.03 in. |
| December | 15.6 °F | 31.9 °F | 1.66 in. |
| Annual | 35.4 °F | 56.3 °F | 35.83 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 |