River Bend, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.7 °C (low) to 18.2 °C (high). Annual precipitation averages 1069.1 Millimeters. 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 | -7.2 °C | 3.3 °C | 33.27 mm |
| February | -4.9 °C | 6.4 °C | 41.66 mm |
| March | 0.3 °C | 12.6 °C | 64.52 mm |
| April | 5.9 °C | 18.5 °C | 103.63 mm |
| May | 12.3 °C | 23.7 °C | 145.03 mm |
| June | 17.8 °C | 28.8 °C | 138.18 mm |
| July | 20.3 °C | 31.2 °C | 121.92 mm |
| August | 18.9 °C | 30.6 °C | 118.11 mm |
| September | 13.8 °C | 26.3 °C | 112.52 mm |
| October | 7.1 °C | 19.8 °C | 88.9 mm |
| November | 0.7 °C | 12 °C | 57.66 mm |
| December | -4.5 °C | 5.6 °C | 43.69 mm |
| Annual | 6.7 °C | 18.2 °C | 1069.09 mm |
| 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 : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |