Menomonee Falls, Wisconsin has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 37.5 °F (low) to 56.2 °F (high). Annual precipitation averages 35.9 Inches. Menomonee Falls is located in USDA Plant Hardiness Zone 5b. 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 | 12.4 °F | 27.9 °F | 1.8 in. |
| February | 15.2 °F | 31.6 °F | 1.68 in. |
| March | 24.5 °F | 42.6 °F | 2.12 in. |
| April | 35.2 °F | 55.0 °F | 3.91 in. |
| May | 46.0 °F | 66.9 °F | 4.03 in. |
| June | 55.8 °F | 76.7 °F | 4.5 in. |
| July | 61.1 °F | 81.6 °F | 4.03 in. |
| August | 59.5 °F | 79.9 °F | 3.59 in. |
| September | 51.5 °F | 72.9 °F | 3.17 in. |
| October | 40.3 °F | 60.0 °F | 2.85 in. |
| November | 29.2 °F | 45.6 °F | 2.14 in. |
| December | 19.0 °F | 33.3 °F | 2.04 in. |
| Annual | 37.5 °F | 56.2 °F | 35.86 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 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |