South Boardman, Michigan has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 1.2 °C (low) to 12.4 °C (high). Annual precipitation averages 904 Millimeters. South Boardman is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -10.9 °C | -2.9 °C | 58.42 mm |
| February | -11.2 °C | -1.4 °C | 48.51 mm |
| March | -7.2 °C | 4.3 °C | 53.09 mm |
| April | -1.1 °C | 11.6 °C | 83.06 mm |
| May | 5.3 °C | 19.1 °C | 82.55 mm |
| June | 10.9 °C | 24.4 °C | 83.57 mm |
| July | 13.2 °C | 26.7 °C | 77.98 mm |
| August | 12.6 °C | 25.6 °C | 82.04 mm |
| September | 8.6 °C | 21.4 °C | 87.12 mm |
| October | 3 °C | 13.8 °C | 104.14 mm |
| November | -2.1 °C | 6.1 °C | 79.25 mm |
| December | -6.8 °C | 0.1 °C | 64.26 mm |
| Annual | 1.2 °C | 12.4 °C | 903.99 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |