Iron Ridge, Wisconsin has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 2.4 °C (low) to 13 °C (high). Annual precipitation averages 874.3 Millimeters. Iron Ridge 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 | -12.2 °C | -3.3 °C | 37.59 mm |
| February | -10.8 °C | -1.3 °C | 34.29 mm |
| March | -4.8 °C | 5.4 °C | 47.75 mm |
| April | 1.6 °C | 12.8 °C | 90.68 mm |
| May | 7.9 °C | 19.6 °C | 97.28 mm |
| June | 13.4 °C | 25.1 °C | 121.67 mm |
| July | 15.8 °C | 27.2 °C | 102.36 mm |
| August | 14.6 °C | 26.2 °C | 96.52 mm |
| September | 10.2 °C | 22.6 °C | 81.79 mm |
| October | 3.8 °C | 15.1 °C | 72.64 mm |
| November | -2.3 °C | 7 °C | 50.04 mm |
| December | -8.4 °C | -0.1 °C | 41.66 mm |
| Annual | 2.4 °C | 13 °C | 874.27 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 |