Denver, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 41.5 °F (low) to 62.3 °F (high). Annual precipitation averages 38.6 Inches. Denver is located in USDA Plant Hardiness Zone 6a. 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 | 15.0 °F | 33.6 °F | 0.92 in. |
| February | 19.5 °F | 38.9 °F | 1.32 in. |
| March | 29.8 °F | 51.3 °F | 2.23 in. |
| April | 40.5 °F | 63.0 °F | 3.91 in. |
| May | 52.2 °F | 73.1 °F | 5.57 in. |
| June | 61.8 °F | 82.3 °F | 5.4 in. |
| July | 66.0 °F | 86.9 °F | 4.78 in. |
| August | 63.7 °F | 85.3 °F | 4.17 in. |
| September | 54.6 °F | 78.0 °F | 3.84 in. |
| October | 42.6 °F | 65.6 °F | 3.06 in. |
| November | 31.0 °F | 50.7 °F | 1.94 in. |
| December | 20.8 °F | 38.3 °F | 1.45 in. |
| Annual | 41.5 °F | 62.3 °F | 38.59 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |