Martin, South Dakota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 1.3 °C (low) to 15.9 °C (high). Annual precipitation averages 517.7 Millimeters. Martin is located in USDA Plant Hardiness Zone 5a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -10.5 °C | 1.9 °C | 10.92 mm |
| February | -9.4 °C | 3.7 °C | 13.21 mm |
| March | -4.9 °C | 9.7 °C | 29.21 mm |
| April | -0.2 °C | 14.8 °C | 58.17 mm |
| May | 5.6 °C | 20.3 °C | 88.39 mm |
| June | 11.5 °C | 26.2 °C | 89.41 mm |
| July | 14.9 °C | 30.7 °C | 64.52 mm |
| August | 13.8 °C | 30.1 °C | 56.9 mm |
| September | 8.4 °C | 25.3 °C | 35.05 mm |
| October | 1.2 °C | 16.7 °C | 40.89 mm |
| November | -5.1 °C | 8.8 °C | 16.76 mm |
| December | -9.7 °C | 2.7 °C | 14.22 mm |
| Annual | 1.3 °C | 15.9 °C | 517.65 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| 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 |