Juneau, Wisconsin has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 36.5 °F (low) to 55.6 °F (high). Annual precipitation averages 34.6 Inches. Juneau 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 | 10.1 °F | 26.2 °F | 1.39 in. |
| February | 12.5 °F | 29.8 °F | 1.38 in. |
| March | 23.4 °F | 41.9 °F | 1.85 in. |
| April | 35.1 °F | 55.2 °F | 3.54 in. |
| May | 46.5 °F | 67.5 °F | 3.81 in. |
| June | 56.6 °F | 77.3 °F | 4.96 in. |
| July | 60.7 °F | 81.0 °F | 4.15 in. |
| August | 58.6 °F | 79.1 °F | 3.76 in. |
| September | 50.6 °F | 72.7 °F | 3.3 in. |
| October | 39.0 °F | 59.3 °F | 2.91 in. |
| November | 28.0 °F | 44.8 °F | 1.98 in. |
| December | 17.0 °F | 31.8 °F | 1.57 in. |
| Annual | 36.5 °F | 55.6 °F | 34.6 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 | Dfa - Humid Continental Hot Summers With Year Around Precipitation |