Bagley, Wisconsin has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 3.2 °C (low) to 13.9 °C (high). Annual precipitation averages 947.9 Millimeters. Bagley is located in USDA Plant Hardiness Zone 5a. 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 | -12.3 °C | -2.9 °C | 31.75 mm |
| February | -10.3 °C | -0.3 °C | 31.24 mm |
| March | -3.8 °C | 6.7 °C | 50.29 mm |
| April | 2.7 °C | 14.4 °C | 96.27 mm |
| May | 9.1 °C | 20.9 °C | 116.59 mm |
| June | 14.8 °C | 26.2 °C | 146.3 mm |
| July | 17.1 °C | 28.1 °C | 115.82 mm |
| August | 15.9 °C | 27.1 °C | 98.81 mm |
| September | 11.2 °C | 23.3 °C | 97.03 mm |
| October | 4.5 °C | 16.2 °C | 70.61 mm |
| November | -2.2 °C | 7.3 °C | 52.83 mm |
| December | -8.3 °C | 0.2 °C | 40.39 mm |
| Annual | 3.2 °C | 13.9 °C | 947.93 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 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 | Dfa - Humid Continental Hot Summers With Year Around Precipitation |