Wales, Wisconsin has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 2.5 °C (low) to 13.2 °C (high). Annual precipitation averages 921.8 Millimeters. Wales is located in USDA Plant Hardiness Zone 5b. 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 | -11.6 °C | -2.7 °C | 42.93 mm |
| February | -10.1 °C | -0.7 °C | 41.4 mm |
| March | -4.8 °C | 5.7 °C | 51.56 mm |
| April | 1.4 °C | 13.1 °C | 95.5 mm |
| May | 7.5 °C | 19.4 °C | 105.41 mm |
| June | 13.1 °C | 24.9 °C | 122.94 mm |
| July | 15.7 °C | 27.3 °C | 101.85 mm |
| August | 14.8 °C | 26.2 °C | 99.82 mm |
| September | 10.2 °C | 22.4 °C | 82.8 mm |
| October | 3.9 °C | 15.2 °C | 73.66 mm |
| November | -2.2 °C | 7.2 °C | 54.61 mm |
| December | -8 °C | 0.3 °C | 49.28 mm |
| Annual | 2.5 °C | 13.2 °C | 921.76 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |