Ridgeway, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2.8 °C (low) to 13.3 °C (high). Annual precipitation averages 985 Millimeters. Ridgeway 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 | -12.2 °C | -3.4 °C | 37.34 mm |
| February | -10.3 °C | -0.8 °C | 37.34 mm |
| March | -4.3 °C | 5.9 °C | 54.1 mm |
| April | 1.9 °C | 13.6 °C | 98.3 mm |
| May | 8.4 °C | 20.2 °C | 113.54 mm |
| June | 14.2 °C | 25.4 °C | 144.27 mm |
| July | 16.4 °C | 27.3 °C | 117.6 mm |
| August | 15.3 °C | 26.4 °C | 110.49 mm |
| September | 10.6 °C | 22.4 °C | 93.22 mm |
| October | 4.2 °C | 15.3 °C | 74.42 mm |
| November | -2.2 °C | 6.9 °C | 59.44 mm |
| December | -8.4 °C | -0.2 °C | 44.96 mm |
| Annual | 2.8 °C | 13.3 °C | 985.02 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 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |