Henrietta, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 42.5 °F (low) to 64.5 °F (high). Annual precipitation averages 42.6 Inches. Henrietta 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 | 17.8 °F | 37.5 °F | 1.43 in. |
| February | 21.9 °F | 43.0 °F | 1.85 in. |
| March | 31.4 °F | 54.1 °F | 2.74 in. |
| April | 41.6 °F | 65.3 °F | 4.25 in. |
| May | 52.4 °F | 74.9 °F | 5.68 in. |
| June | 62.6 °F | 83.6 °F | 5.53 in. |
| July | 66.4 °F | 87.4 °F | 4.74 in. |
| August | 63.7 °F | 86.6 °F | 4.33 in. |
| September | 55.1 °F | 78.9 °F | 4.47 in. |
| October | 43.1 °F | 67.5 °F | 3.51 in. |
| November | 31.8 °F | 53.3 °F | 2.36 in. |
| December | 22.3 °F | 41.8 °F | 1.74 in. |
| Annual | 42.5 °F | 64.5 °F | 42.63 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 |