Dardenne Prairie, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 45.7 °F (low) to 66 °F (high). Annual precipitation averages 43.5 Inches. Dardenne Prairie is located in USDA Plant Hardiness Zone 6b. 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 | 22.2 °F | 39.7 °F | 2.58 in. |
| February | 25.4 °F | 45.3 °F | 2.38 in. |
| March | 34.3 °F | 55.5 °F | 3.53 in. |
| April | 45.0 °F | 67.2 °F | 4.76 in. |
| May | 55.4 °F | 76.1 °F | 5.12 in. |
| June | 64.7 °F | 84.4 °F | 4.59 in. |
| July | 68.4 °F | 88.2 °F | 3.98 in. |
| August | 66.5 °F | 87.0 °F | 3.63 in. |
| September | 58.1 °F | 80.6 °F | 3.32 in. |
| October | 46.3 °F | 68.7 °F | 3.34 in. |
| November | 35.5 °F | 55.4 °F | 3.53 in. |
| December | 26.7 °F | 44.0 °F | 2.77 in. |
| Annual | 45.7 °F | 66 °F | 43.53 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 6b : -5°F to 0°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 |