Bryant, South Dakota has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 33.1 °F (low) to 53.4 °F (high). Annual precipitation averages 25.5 Inches. Bryant 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 | 3.5 °F | 21.7 °F | 0.56 in. |
| February | 7.1 °F | 26.5 °F | 0.67 in. |
| March | 19.2 °F | 38.7 °F | 1.09 in. |
| April | 31.9 °F | 53.9 °F | 2.44 in. |
| May | 45.0 °F | 66.4 °F | 3.32 in. |
| June | 55.8 °F | 76.3 °F | 4.28 in. |
| July | 60.5 °F | 81.4 °F | 3.36 in. |
| August | 57.8 °F | 79.4 °F | 3.11 in. |
| September | 49.0 °F | 71.7 °F | 2.74 in. |
| October | 35.5 °F | 57.0 °F | 2.31 in. |
| November | 22.1 °F | 40.6 °F | 0.88 in. |
| December | 10.3 °F | 26.9 °F | 0.69 in. |
| Annual | 33.1 °F | 53.4 °F | 25.45 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 4b : -25°F to -20°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |