Bryan, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 57.6 °F (low) to 79.1 °F (high). Annual precipitation averages 42.5 Inches. Bryan is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 21 - Feb. 29 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 39.8 °F | 61.0 °F | 3.53 in. |
| February | 43.5 °F | 64.7 °F | 2.86 in. |
| March | 49.7 °F | 71.5 °F | 3.43 in. |
| April | 56.7 °F | 78.4 °F | 3.17 in. |
| May | 65.5 °F | 85.3 °F | 4.73 in. |
| June | 71.9 °F | 91.6 °F | 3.84 in. |
| July | 74.2 °F | 95.0 °F | 2.06 in. |
| August | 73.6 °F | 96.0 °F | 3.24 in. |
| September | 68.5 °F | 90.6 °F | 3.46 in. |
| October | 58.4 °F | 81.7 °F | 4.61 in. |
| November | 48.4 °F | 70.7 °F | 3.75 in. |
| December | 41.5 °F | 62.7 °F | 3.79 in. |
| Annual | 57.6 °F | 79.1 °F | 42.47 in. |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Feb. 21 - Feb. 29 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9a : 20°F to 25°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |