Broadland, South Dakota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 0.9 °C (low) to 13.7 °C (high). Annual precipitation averages 602.2 Millimeters. Broadland is located in USDA Plant Hardiness Zone 4b. 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 | -15.2 °C | -4.2 °C | 15.49 mm |
| February | -12.8 °C | -1.1 °C | 18.03 mm |
| March | -6.3 °C | 5.8 °C | 24.64 mm |
| April | 0.3 °C | 14 °C | 63.75 mm |
| May | 7.4 °C | 20.7 °C | 84.84 mm |
| June | 13.6 °C | 26.3 °C | 97.79 mm |
| July | 16.2 °C | 29.6 °C | 78.49 mm |
| August | 14.7 °C | 28.5 °C | 68.33 mm |
| September | 9.4 °C | 24.1 °C | 59.94 mm |
| October | 1.8 °C | 15.8 °C | 54.36 mm |
| November | -5.8 °C | 6.4 °C | 20.07 mm |
| December | -12 °C | -1.4 °C | 16.51 mm |
| Annual | 0.9 °C | 13.7 °C | 602.24 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 4b : -31.7°C to -28.9°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |