Charlack, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 48.9 °F (low) to 66.5 °F (high). Annual precipitation averages 43.3 Inches. Charlack 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 Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 25.1 °F | 40.0 °F | 2.67 in. |
| February | 28.1 °F | 45.8 °F | 2.21 in. |
| March | 37.1 °F | 56.2 °F | 3.49 in. |
| April | 47.9 °F | 67.6 °F | 4.76 in. |
| May | 58.8 °F | 76.7 °F | 5.1 in. |
| June | 68.0 °F | 85.4 °F | 4.6 in. |
| July | 72.0 °F | 88.9 °F | 3.97 in. |
| August | 70.0 °F | 87.6 °F | 3.63 in. |
| September | 61.6 °F | 80.8 °F | 3.24 in. |
| October | 50.0 °F | 69.3 °F | 3.31 in. |
| November | 38.3 °F | 55.1 °F | 3.52 in. |
| December | 29.9 °F | 44.7 °F | 2.75 in. |
| Annual | 48.9 °F | 66.5 °F | 43.25 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| 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 6b : -5°F to 0°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |