Odessa, Minnesota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 0.6 °C (low) to 12.4 °C (high). Annual precipitation averages 652.5 Millimeters. Odessa is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -16.3 °C | -5.6 °C | 17.78 mm |
| February | -14.6 °C | -3.3 °C | 18.03 mm |
| March | -7.2 °C | 3.7 °C | 31.75 mm |
| April | 0.4 °C | 12.8 °C | 61.47 mm |
| May | 7.8 °C | 20.2 °C | 74.42 mm |
| June | 14.1 °C | 25.6 °C | 98.81 mm |
| July | 15.9 °C | 27.8 °C | 101.6 mm |
| August | 14.2 °C | 26.8 °C | 81.53 mm |
| September | 9.2 °C | 22.9 °C | 63.75 mm |
| October | 1.9 °C | 14.7 °C | 58.42 mm |
| November | -5.4 °C | 5.7 °C | 26.42 mm |
| December | -12.3 °C | -2.4 °C | 18.54 mm |
| Annual | 0.6 °C | 12.4 °C | 652.52 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4b : -31.7°C to -28.9°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |