Triplett, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 43 °F (low) to 63.6 °F (high). Annual precipitation averages 41 Inches. Triplett is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 17.4 °F | 36.2 °F | 1.33 in. |
| February | 21.7 °F | 41.5 °F | 1.82 in. |
| March | 31.6 °F | 53.4 °F | 2.7 in. |
| April | 42.2 °F | 64.5 °F | 4.11 in. |
| May | 53.3 °F | 74.0 °F | 5.59 in. |
| June | 63.4 °F | 82.8 °F | 5.45 in. |
| July | 67.2 °F | 86.8 °F | 4.53 in. |
| August | 64.6 °F | 85.5 °F | 4.03 in. |
| September | 55.3 °F | 78.6 °F | 3.93 in. |
| October | 43.7 °F | 66.9 °F | 3.25 in. |
| November | 32.3 °F | 52.9 °F | 2.44 in. |
| December | 22.7 °F | 40.5 °F | 1.8 in. |
| Annual | 43 °F | 63.6 °F | 40.98 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |