Thorp, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 0.2 °C (low) to 11.5 °C (high). Annual precipitation averages 832.9 Millimeters. Thorp is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -16 °C | -5.7 °C | 25.15 mm |
| February | -14.5 °C | -3 °C | 24.89 mm |
| March | -7.5 °C | 3.9 °C | 42.42 mm |
| April | -0.2 °C | 11.9 °C | 75.44 mm |
| May | 6.6 °C | 19.1 °C | 97.79 mm |
| June | 12.2 °C | 24.1 °C | 117.86 mm |
| July | 14.3 °C | 26.4 °C | 98.3 mm |
| August | 13 °C | 25.3 °C | 107.44 mm |
| September | 8.4 °C | 20.9 °C | 91.19 mm |
| October | 1.8 °C | 13.4 °C | 70.1 mm |
| November | -4.6 °C | 4.7 °C | 47.5 mm |
| December | -11.5 °C | -2.6 °C | 34.8 mm |
| Annual | 0.2 °C | 11.5 °C | 832.88 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4b : -31.7°C to -28.9°C |
| Plant Hardiness Zone - 2012 | Zone 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |