Bagley, Wisconsin has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 37.8 °F (low) to 57.1 °F (high). Annual precipitation averages 37.3 Inches. 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 | 9.9 °F | 26.8 °F | 1.25 in. |
| February | 13.4 °F | 31.4 °F | 1.23 in. |
| March | 25.2 °F | 44.0 °F | 1.98 in. |
| April | 36.8 °F | 57.9 °F | 3.79 in. |
| May | 48.4 °F | 69.7 °F | 4.59 in. |
| June | 58.7 °F | 79.1 °F | 5.76 in. |
| July | 62.7 °F | 82.6 °F | 4.56 in. |
| August | 60.6 °F | 80.8 °F | 3.89 in. |
| September | 52.2 °F | 74.0 °F | 3.82 in. |
| October | 40.1 °F | 61.1 °F | 2.78 in. |
| November | 28.1 °F | 45.2 °F | 2.08 in. |
| December | 17.0 °F | 32.4 °F | 1.59 in. |
| Annual | 37.8 °F | 57.1 °F | 37.32 in. |
| 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 : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |