Odessa, 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 18.1 °C (high). Annual precipitation averages 1072.7 Millimeters. Odessa 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 | -7.1 °C | 3.4 °C | 36.58 mm |
| February | -4.8 °C | 6.3 °C | 45.72 mm |
| March | 0.4 °C | 12.4 °C | 70.36 mm |
| April | 6.3 °C | 18.2 °C | 108.46 mm |
| May | 12.3 °C | 23.6 °C | 139.45 mm |
| June | 17.7 °C | 28.4 °C | 134.62 mm |
| July | 19.9 °C | 30.8 °C | 127.25 mm |
| August | 18.7 °C | 30.2 °C | 107.95 mm |
| September | 13.8 °C | 26.1 °C | 108.46 mm |
| October | 7.2 °C | 19.8 °C | 85.34 mm |
| November | 0.9 °C | 12 °C | 62.23 mm |
| December | -4.4 °C | 5.6 °C | 46.23 mm |
| Annual | 6.7 °C | 18.1 °C | 1072.65 mm |
| 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 : -20.6°C to -17.8°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 |