Angleton, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 15.9 °C (low) to 26.2 °C (high). Annual precipitation averages 1332.7 Millimeters. Angleton is located in USDA Plant Hardiness Zone 9b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 6.7 °C | 17.6 °C | 105.16 mm |
| February | 8.9 °C | 19.4 °C | 71.12 mm |
| March | 12.2 °C | 22.5 °C | 84.33 mm |
| April | 15.6 °C | 25.7 °C | 93.22 mm |
| May | 19.8 °C | 29.2 °C | 110.24 mm |
| June | 22.9 °C | 32.2 °C | 123.95 mm |
| July | 23.6 °C | 33.2 °C | 109.73 mm |
| August | 23.6 °C | 33.7 °C | 128.52 mm |
| September | 21.4 °C | 31.7 °C | 168.91 mm |
| October | 16.6 °C | 28 °C | 125.73 mm |
| November | 11.3 °C | 22.8 °C | 100.58 mm |
| December | 7.8 °C | 18.8 °C | 111.25 mm |
| Annual | 15.9 °C | 26.2 °C | 1332.74 mm |
| Average First Frost Date | Frost Rare |
| Average Last Frost Date | |
| Average Days With Frost | Frost Rare |
| Plant Hardiness Zone | Zone 9b : -3.9°C to -1.1°C |
| Plant Hardiness Zone - 2012 | Zone 9a : -6.7°C to -3.9°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |