Florence, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -1.3 °C (low) to 10.8 °C (high). Annual precipitation averages 783.3 Millimeters. Florence is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -15.8 °C | -5.4 °C | 31.75 mm |
| February | -15.6 °C | -3.1 °C | 27.43 mm |
| March | -10 °C | 3.2 °C | 38.35 mm |
| April | -2.7 °C | 10.1 °C | 68.58 mm |
| May | 4.3 °C | 18.2 °C | 82.55 mm |
| June | 9.8 °C | 23.2 °C | 98.04 mm |
| July | 12.2 °C | 25.5 °C | 95.25 mm |
| August | 11.2 °C | 24.3 °C | 78.49 mm |
| September | 7.1 °C | 19.9 °C | 91.69 mm |
| October | 0.8 °C | 12.1 °C | 84.58 mm |
| November | -4.9 °C | 3.9 °C | 46.99 mm |
| December | -11.6 °C | -2.6 °C | 39.62 mm |
| Annual | -1.3 °C | 10.8 °C | 783.32 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | Over 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 |