Odessa, Texas has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 10.8 °C (low) to 25.6 °C (high). Annual precipitation averages 350.5 Millimeters. Odessa is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -0.2 °C | 14.6 °C | 16.76 mm |
| February | 1.7 °C | 17.4 °C | 15.49 mm |
| March | 5.7 °C | 21.8 °C | 21.08 mm |
| April | 10.1 °C | 26.6 °C | 20.57 mm |
| May | 15.6 °C | 30.9 °C | 39.88 mm |
| June | 20.3 °C | 34.7 °C | 41.66 mm |
| July | 21.7 °C | 35.1 °C | 33.02 mm |
| August | 21.2 °C | 34.6 °C | 43.94 mm |
| September | 17.3 °C | 30.6 °C | 46.99 mm |
| October | 11.4 °C | 26.1 °C | 32.77 mm |
| November | 4.7 °C | 19.4 °C | 20.32 mm |
| December | 0.2 °C | 15.1 °C | 18.03 mm |
| Annual | 10.8 °C | 25.6 °C | 350.51 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |