Endeavor, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1.9 °C (low) to 13.6 °C (high). Annual precipitation averages 914.9 Millimeters. Endeavor 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 | -13 °C | -2.9 °C | 34.54 mm |
| February | -11.5 °C | -0.4 °C | 32.77 mm |
| March | -5.5 °C | 6.2 °C | 49.53 mm |
| April | 1 °C | 13.6 °C | 95.25 mm |
| May | 7.9 °C | 20.6 °C | 109.22 mm |
| June | 13.5 °C | 25.8 °C | 131.32 mm |
| July | 15.7 °C | 27.9 °C | 106.93 mm |
| August | 14.3 °C | 26.8 °C | 100.58 mm |
| September | 9.6 °C | 22.7 °C | 88.14 mm |
| October | 3.2 °C | 15.4 °C | 72.39 mm |
| November | -3.1 °C | 7.1 °C | 51.82 mm |
| December | -9 °C | 0.1 °C | 42.42 mm |
| Annual | 1.9 °C | 13.6 °C | 914.91 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 | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |