Port Edwards, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1 °C (low) to 12.8 °C (high). Annual precipitation averages 857.5 Millimeters. Port Edwards 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 | -14.4 °C | -3.9 °C | 29.97 mm |
| February | -12.9 °C | -1.3 °C | 27.69 mm |
| March | -6.7 °C | 5.3 °C | 45.97 mm |
| April | 0.3 °C | 13.2 °C | 85.34 mm |
| May | 7.2 °C | 20 °C | 100.84 mm |
| June | 12.8 °C | 25.1 °C | 121.16 mm |
| July | 14.7 °C | 27.6 °C | 97.28 mm |
| August | 13.3 °C | 26.3 °C | 103.89 mm |
| September | 8.9 °C | 22.2 °C | 90.17 mm |
| October | 2.6 °C | 14.4 °C | 68.58 mm |
| November | -3.8 °C | 6.1 °C | 46.99 mm |
| December | -10.3 °C | -1.1 °C | 39.62 mm |
| Annual | 1 °C | 12.8 °C | 857.5 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 4b : -31.7°C to -28.9°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |