Galesville, Wisconsin has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 2.4 °C (low) to 13.6 °C (high). Annual precipitation averages 909.3 Millimeters. Galesville is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -13.5 °C | -3.4 °C | 26.92 mm |
| February | -11.6 °C | -0.7 °C | 28.19 mm |
| March | -4.9 °C | 6.2 °C | 46.99 mm |
| April | 1.9 °C | 14.2 °C | 95.25 mm |
| May | 8.6 °C | 20.9 °C | 115.06 mm |
| June | 14.3 °C | 26.2 °C | 126.24 mm |
| July | 16.6 °C | 28.2 °C | 109.98 mm |
| August | 15.3 °C | 27.1 °C | 112.27 mm |
| September | 10.8 °C | 23.1 °C | 101.35 mm |
| October | 3.8 °C | 15.6 °C | 65.28 mm |
| November | -2.7 °C | 6.8 °C | 46.74 mm |
| December | -9.3 °C | -0.5 °C | 35.05 mm |
| Annual | 2.4 °C | 13.6 °C | 909.32 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 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 | Dfa - Humid Continental Hot Summers With Year Around Precipitation |