San Angelo, Texas has a Hot Semi-Arid Climate climate (Köppen classification: BSh). Average annual temperatures range from 51.9 °F (low) to 78.6 °F (high). Annual precipitation averages 21.4 Inches. San Angelo is located in USDA Plant Hardiness Zone 8a. 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 | 31.6 °F | 59.5 °F | 0.98 in. |
| February | 35.6 °F | 63.8 °F | 1.27 in. |
| March | 43.4 °F | 71.4 °F | 1.44 in. |
| April | 50.6 °F | 80.2 °F | 1.48 in. |
| May | 61.1 °F | 87.2 °F | 2.61 in. |
| June | 68.8 °F | 93.2 °F | 2.67 in. |
| July | 71.3 °F | 95.7 °F | 1.71 in. |
| August | 70.6 °F | 95.4 °F | 2.37 in. |
| September | 63.4 °F | 88.4 °F | 2.53 in. |
| October | 52.5 °F | 79.6 °F | 2.3 in. |
| November | 41.1 °F | 68.3 °F | 1.22 in. |
| December | 33.1 °F | 60.7 °F | 0.86 in. |
| Annual | 51.9 °F | 78.6 °F | 21.44 in. |
| 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 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | BSh - Hot Semi-Arid Climate |