Artesian, South Dakota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 35.1 °F (low) to 57.7 °F (high). Annual precipitation averages 24.6 Inches. Artesian 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 Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 6.9 °F | 26.1 °F | 0.5 in. |
| February | 10.9 °F | 31.8 °F | 0.66 in. |
| March | 22.0 °F | 43.8 °F | 1.14 in. |
| April | 33.7 °F | 58.6 °F | 2.8 in. |
| May | 46.5 °F | 70.2 °F | 3.55 in. |
| June | 57.5 °F | 80.2 °F | 3.88 in. |
| July | 61.7 °F | 85.6 °F | 3.0 in. |
| August | 59.5 °F | 83.7 °F | 2.9 in. |
| September | 50.5 °F | 75.9 °F | 2.61 in. |
| October | 36.4 °F | 61.3 °F | 2.07 in. |
| November | 23.1 °F | 44.4 °F | 0.87 in. |
| December | 11.9 °F | 30.6 °F | 0.61 in. |
| Annual | 35.1 °F | 57.7 °F | 24.59 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5a : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |