Black River Falls, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 33.6 °F (low) to 56.2 °F (high). Annual precipitation averages 37.9 Inches. Black River Falls 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 | 5.5 °F | 25.6 °F | 1.23 in. |
| February | 8.5 °F | 30.6 °F | 1.18 in. |
| March | 20.4 °F | 42.8 °F | 1.85 in. |
| April | 32.5 °F | 57.1 °F | 3.7 in. |
| May | 44.9 °F | 69.5 °F | 4.72 in. |
| June | 54.8 °F | 78.6 °F | 5.73 in. |
| July | 58.7 °F | 82.5 °F | 4.41 in. |
| August | 56.5 °F | 80.4 °F | 4.7 in. |
| September | 48.0 °F | 73.2 °F | 3.88 in. |
| October | 35.9 °F | 59.8 °F | 3.14 in. |
| November | 24.5 °F | 43.8 °F | 1.79 in. |
| December | 13.1 °F | 30.8 °F | 1.56 in. |
| Annual | 33.6 °F | 56.2 °F | 37.89 in. |
| 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 4b : -25°F to -20°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |