Menno, South Dakota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 2.5 °C (low) to 14.9 °C (high). Annual precipitation averages 638.8 Millimeters. Menno 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 | -12.8 °C | -2.2 °C | 13.97 mm |
| February | -10.6 °C | 0.7 °C | 17.27 mm |
| March | -4.6 °C | 7.4 °C | 32 mm |
| April | 1.8 °C | 15.2 °C | 71.37 mm |
| May | 8.6 °C | 21.9 °C | 90.42 mm |
| June | 14.8 °C | 27.6 °C | 92.2 mm |
| July | 17.2 °C | 30 °C | 74.68 mm |
| August | 15.8 °C | 28.6 °C | 73.41 mm |
| September | 10.8 °C | 24.9 °C | 72.9 mm |
| October | 3.3 °C | 17.2 °C | 55.12 mm |
| November | -4.3 °C | 7.7 °C | 25.4 mm |
| December | -10.2 °C | 0.2 °C | 20.07 mm |
| Annual | 2.5 °C | 14.9 °C | 638.81 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 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |