Arkansaw, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 35.5 °F (low) to 55.4 °F (high). Annual precipitation averages 35.5 Inches. Arkansaw 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 Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 6.2 °F | 24.2 °F | 1.06 in. |
| February | 9.6 °F | 29.2 °F | 1.13 in. |
| March | 21.8 °F | 41.6 °F | 2.03 in. |
| April | 34.6 °F | 56.2 °F | 3.27 in. |
| May | 46.7 °F | 68.6 °F | 4.37 in. |
| June | 57.2 °F | 78.2 °F | 5.2 in. |
| July | 61.4 °F | 82.5 °F | 3.88 in. |
| August | 59.0 °F | 80.3 °F | 4.82 in. |
| September | 50.9 °F | 73.0 °F | 3.79 in. |
| October | 38.4 °F | 58.9 °F | 2.69 in. |
| November | 25.8 °F | 42.8 °F | 1.85 in. |
| December | 13.8 °F | 29.5 °F | 1.45 in. |
| Annual | 35.5 °F | 55.4 °F | 35.54 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 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 |