River Bend, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 44.1 °F (low) to 64.8 °F (high). Annual precipitation averages 42.1 Inches. River Bend is located in USDA Plant Hardiness Zone 6a. 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 | 19.0 °F | 37.9 °F | 1.31 in. |
| February | 23.1 °F | 43.6 °F | 1.64 in. |
| March | 32.5 °F | 54.6 °F | 2.54 in. |
| April | 42.7 °F | 65.3 °F | 4.08 in. |
| May | 54.1 °F | 74.6 °F | 5.71 in. |
| June | 64.1 °F | 83.9 °F | 5.44 in. |
| July | 68.6 °F | 88.1 °F | 4.8 in. |
| August | 66.0 °F | 87.0 °F | 4.65 in. |
| September | 56.8 °F | 79.4 °F | 4.43 in. |
| October | 44.7 °F | 67.6 °F | 3.5 in. |
| November | 33.2 °F | 53.6 °F | 2.27 in. |
| December | 23.9 °F | 42.1 °F | 1.72 in. |
| Annual | 44.1 °F | 64.8 °F | 42.09 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6a : -10°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 |