Lone Rock, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2.2 °C (low) to 13.9 °C (high). Annual precipitation averages 941.3 Millimeters. Lone Rock is located in USDA Plant Hardiness Zone 4b. 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 | -2.6 °C | 33.78 mm |
| February | -11.4 °C | -0.2 °C | 33.53 mm |
| March | -5 °C | 6.6 °C | 51.82 mm |
| April | 1.7 °C | 13.9 °C | 98.81 mm |
| May | 8.2 °C | 20.8 °C | 112.52 mm |
| June | 13.9 °C | 25.9 °C | 137.16 mm |
| July | 16 °C | 28 °C | 118.87 mm |
| August | 14.8 °C | 27.1 °C | 98.04 mm |
| September | 9.9 °C | 23 °C | 93.47 mm |
| October | 3.1 °C | 15.9 °C | 68.83 mm |
| November | -3.1 °C | 7.5 °C | 53.34 mm |
| December | -9.1 °C | 0.4 °C | 41.15 mm |
| Annual | 2.2 °C | 13.9 °C | 941.32 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| 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 | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |