Clarkson Valley, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 47.3 °F (low) to 66.3 °F (high). Annual precipitation averages 43.6 Inches. Clarkson Valley is located in USDA Plant Hardiness Zone 7a. 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 | 24.0 °F | 40.4 °F | 2.7 in. |
| February | 26.9 °F | 45.7 °F | 2.47 in. |
| March | 35.9 °F | 56.2 °F | 3.61 in. |
| April | 46.4 °F | 67.4 °F | 4.74 in. |
| May | 56.9 °F | 76.3 °F | 5.12 in. |
| June | 66.1 °F | 84.7 °F | 4.56 in. |
| July | 69.9 °F | 88.4 °F | 3.89 in. |
| August | 68.0 °F | 87.2 °F | 3.54 in. |
| September | 60.0 °F | 80.7 °F | 3.2 in. |
| October | 48.1 °F | 68.9 °F | 3.4 in. |
| November | 37.3 °F | 55.4 °F | 3.59 in. |
| December | 28.6 °F | 44.5 °F | 2.76 in. |
| Annual | 47.3 °F | 66.3 °F | 43.58 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : 0°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 |