Hudson, South Dakota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 2.3 °C (low) to 14.6 °C (high). Annual precipitation averages 726.4 Millimeters. Hudson 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 | -13.3 °C | -2.7 °C | 15.75 mm |
| February | -10.9 °C | 0.1 °C | 19.81 mm |
| March | -4.6 °C | 7.2 °C | 39.37 mm |
| April | 1.7 °C | 15.1 °C | 76.45 mm |
| May | 8.6 °C | 21.7 °C | 101.35 mm |
| June | 14.9 °C | 27.3 °C | 114.81 mm |
| July | 16.9 °C | 29.3 °C | 81.79 mm |
| August | 15.4 °C | 28.1 °C | 82.55 mm |
| September | 10.2 °C | 24.4 °C | 75.44 mm |
| October | 2.9 °C | 16.8 °C | 62.48 mm |
| November | -4.3 °C | 7.6 °C | 33.53 mm |
| December | -10.3 °C | -0.2 °C | 23.11 mm |
| Annual | 2.3 °C | 14.6 °C | 726.44 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 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |