Celeste, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11.7 °C (low) to 23.8 °C (high). Annual precipitation averages 1111.7 Millimeters. Celeste is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 0.6 °C | 12.4 °C | 71.37 mm |
| February | 2.5 °C | 14.8 °C | 81.03 mm |
| March | 6.6 °C | 19 °C | 101.09 mm |
| April | 10.8 °C | 23.2 °C | 98.04 mm |
| May | 16.2 °C | 27.3 °C | 130.81 mm |
| June | 20.7 °C | 31.8 °C | 99.31 mm |
| July | 22.6 °C | 34.4 °C | 63.25 mm |
| August | 22.1 °C | 34.7 °C | 69.34 mm |
| September | 18.2 °C | 30.9 °C | 84.07 mm |
| October | 11.9 °C | 25.2 °C | 123.95 mm |
| November | 6.2 °C | 18.6 °C | 91.69 mm |
| December | 1.7 °C | 13.6 °C | 97.79 mm |
| Annual | 11.7 °C | 23.8 °C | 1111.74 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| 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 | Cfa - Humid Subtropical Climate |