Terre du Lac, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 45 °F (low) to 66.3 °F (high). Annual precipitation averages 44.9 Inches. Terre du Lac is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 22.7 °F | 41.6 °F | 2.67 in. |
| February | 25.9 °F | 46.8 °F | 2.64 in. |
| March | 34.0 °F | 56.4 °F | 3.88 in. |
| April | 44.4 °F | 67.6 °F | 5.22 in. |
| May | 54.2 °F | 75.5 °F | 5.37 in. |
| June | 62.6 °F | 83.5 °F | 4.09 in. |
| July | 66.8 °F | 87.4 °F | 3.92 in. |
| August | 65.0 °F | 86.7 °F | 3.57 in. |
| September | 57.1 °F | 79.9 °F | 3.4 in. |
| October | 45.8 °F | 69.1 °F | 3.34 in. |
| November | 35.2 °F | 55.9 °F | 3.83 in. |
| December | 26.7 °F | 44.8 °F | 2.99 in. |
| Annual | 45 °F | 66.3 °F | 44.92 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |