Park Ridge, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 33.9 °F (low) to 53.8 °F (high). Annual precipitation averages 33.7 Inches. Park 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 | 6.7 °F | 24.0 °F | 1.18 in. |
| February | 8.9 °F | 28.3 °F | 1.08 in. |
| March | 20.0 °F | 40.1 °F | 1.77 in. |
| April | 32.4 °F | 54.0 °F | 3.29 in. |
| May | 44.8 °F | 66.8 °F | 4.06 in. |
| June | 54.8 °F | 75.9 °F | 4.86 in. |
| July | 58.6 °F | 80.4 °F | 3.81 in. |
| August | 56.6 °F | 78.0 °F | 3.9 in. |
| September | 48.4 °F | 70.7 °F | 3.61 in. |
| October | 36.6 °F | 56.8 °F | 2.75 in. |
| November | 25.3 °F | 42.1 °F | 1.87 in. |
| December | 13.6 °F | 29.0 °F | 1.53 in. |
| Annual | 33.9 °F | 53.8 °F | 33.71 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 5a : -20°F to -15°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 |