Avon, South Dakota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 37.7 °F (low) to 60.5 °F (high). Annual precipitation averages 26.3 Inches. Avon 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 | 11.3 °F | 31.9 °F | 0.56 in. |
| February | 15.3 °F | 37.4 °F | 0.79 in. |
| March | 24.9 °F | 48.8 °F | 1.34 in. |
| April | 36.2 °F | 59.9 °F | 3.04 in. |
| May | 47.8 °F | 71.1 °F | 3.92 in. |
| June | 58.9 °F | 81.2 °F | 3.69 in. |
| July | 64.3 °F | 87.2 °F | 3.03 in. |
| August | 61.6 °F | 84.9 °F | 3.16 in. |
| September | 52.2 °F | 77.5 °F | 2.71 in. |
| October | 38.7 °F | 62.8 °F | 2.29 in. |
| November | 25.8 °F | 47.9 °F | 0.97 in. |
| December | 15.8 °F | 35.6 °F | 0.76 in. |
| Annual | 37.7 °F | 60.5 °F | 26.26 in. |
| 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 : -20°F to -15°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |