Mount Calvary, 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 12.6 °C (high). Annual precipitation averages 833.6 Millimeters. Mount Calvary 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -12.2 °C | -3.8 °C | 35.81 mm |
| February | -10.9 °C | -1.8 °C | 30.99 mm |
| March | -5 °C | 4.6 °C | 45.97 mm |
| April | 1.3 °C | 12.3 °C | 83.82 mm |
| May | 7.8 °C | 19.2 °C | 94.49 mm |
| June | 13.4 °C | 24.7 °C | 113.54 mm |
| July | 15.8 °C | 27.2 °C | 96.27 mm |
| August | 14.9 °C | 26.1 °C | 91.95 mm |
| September | 10.6 °C | 22.3 °C | 78.23 mm |
| October | 4.1 °C | 14.7 °C | 73.15 mm |
| November | -2.2 °C | 6.4 °C | 49.02 mm |
| December | -8.3 °C | -0.6 °C | 40.39 mm |
| Annual | 2.4 °C | 12.6 °C | 833.63 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| 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 | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |