Clyman, Wisconsin has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 2.6 °C (low) to 13.2 °C (high). Annual precipitation averages 884.2 Millimeters. Clyman 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 | -12.1 °C | -3.1 °C | 37.08 mm |
| February | -10.7 °C | -1.1 °C | 37.59 mm |
| March | -4.7 °C | 5.6 °C | 47.24 mm |
| April | 1.8 °C | 13.1 °C | 90.68 mm |
| May | 8.2 °C | 19.9 °C | 97.54 mm |
| June | 13.7 °C | 25.3 °C | 126.49 mm |
| July | 16 °C | 27.4 °C | 103.89 mm |
| August | 14.8 °C | 26.3 °C | 97.28 mm |
| September | 10.3 °C | 22.8 °C | 80.52 mm |
| October | 4 °C | 15.3 °C | 73.66 mm |
| November | -2.2 °C | 7.2 °C | 51.31 mm |
| December | -8.3 °C | -0.1 °C | 40.89 mm |
| Annual | 2.6 °C | 13.2 °C | 884.17 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 | Dfa - Humid Continental Hot Summers With Year Around Precipitation |