Arkansaw, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1.9 °C (low) to 13 °C (high). Annual precipitation averages 902.7 Millimeters. 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 | -14.3 °C | -4.3 °C | 26.92 mm |
| February | -12.4 °C | -1.6 °C | 28.7 mm |
| March | -5.7 °C | 5.3 °C | 51.56 mm |
| April | 1.4 °C | 13.4 °C | 83.06 mm |
| May | 8.2 °C | 20.3 °C | 111 mm |
| June | 14 °C | 25.7 °C | 132.08 mm |
| July | 16.3 °C | 28.1 °C | 98.55 mm |
| August | 15 °C | 26.8 °C | 122.43 mm |
| September | 10.5 °C | 22.8 °C | 96.27 mm |
| October | 3.6 °C | 14.9 °C | 68.33 mm |
| November | -3.4 °C | 6 °C | 46.99 mm |
| December | -10.1 °C | -1.4 °C | 36.83 mm |
| Annual | 1.9 °C | 13 °C | 902.72 mm |
| 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 : -31.7°C to -28.9°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |