Celina, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 54.1 °F (low) to 75.5 °F (high). Annual precipitation averages 41.1 Inches. Celina 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 | 33.4 °F | 54.6 °F | 2.35 in. |
| February | 37.0 °F | 59.0 °F | 2.86 in. |
| March | 44.6 °F | 66.5 °F | 3.76 in. |
| April | 52.5 °F | 74.6 °F | 3.68 in. |
| May | 62.1 °F | 82.1 °F | 5.4 in. |
| June | 70.5 °F | 90.4 °F | 3.9 in. |
| July | 74.4 °F | 95.3 °F | 2.19 in. |
| August | 73.8 °F | 95.6 °F | 2.5 in. |
| September | 66.4 °F | 88.2 °F | 3.26 in. |
| October | 55.0 °F | 77.8 °F | 4.77 in. |
| November | 44.1 °F | 65.6 °F | 3.19 in. |
| December | 35.5 °F | 56.6 °F | 3.19 in. |
| Annual | 54.1 °F | 75.5 °F | 41.05 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |