Blanchardville, Wisconsin has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 36.5 °F (low) to 57.7 °F (high). Annual precipitation averages 37.5 Inches. Blanchardville is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 9.9 °F | 27.8 °F | 1.39 in. |
| February | 13.0 °F | 32.1 °F | 1.49 in. |
| March | 23.7 °F | 44.2 °F | 2.05 in. |
| April | 35.1 °F | 58.5 °F | 3.79 in. |
| May | 46.4 °F | 69.9 °F | 4.26 in. |
| June | 56.9 °F | 79.8 °F | 5.52 in. |
| July | 60.7 °F | 83.2 °F | 4.36 in. |
| August | 58.6 °F | 81.6 °F | 4.17 in. |
| September | 50.0 °F | 74.6 °F | 3.7 in. |
| October | 38.9 °F | 61.7 °F | 2.8 in. |
| November | 27.7 °F | 46.0 °F | 2.3 in. |
| December | 17.3 °F | 33.4 °F | 1.65 in. |
| Annual | 36.5 °F | 57.7 °F | 37.48 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |