Redgranite, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 35.4 °F (low) to 55.6 °F (high). Annual precipitation averages 34.4 Inches. Redgranite 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 | 8.8 °F | 26.0 °F | 1.33 in. |
| February | 11.1 °F | 30.0 °F | 1.19 in. |
| March | 21.9 °F | 41.6 °F | 1.96 in. |
| April | 33.7 °F | 55.2 °F | 3.57 in. |
| May | 46.0 °F | 67.7 °F | 4.09 in. |
| June | 56.1 °F | 77.6 °F | 4.91 in. |
| July | 60.1 °F | 81.9 °F | 3.86 in. |
| August | 58.0 °F | 79.9 °F | 3.7 in. |
| September | 49.5 °F | 72.4 °F | 3.35 in. |
| October | 37.8 °F | 58.8 °F | 2.78 in. |
| November | 26.6 °F | 44.3 °F | 1.97 in. |
| December | 15.7 °F | 31.4 °F | 1.67 in. |
| Annual | 35.4 °F | 55.6 °F | 34.38 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 |