Nixon, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 14.4 °C (low) to 27.3 °C (high). Annual precipitation averages 878.9 Millimeters. Nixon 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 | 4.7 °C | 17.8 °C | 52.07 mm |
| February | 7 °C | 20 °C | 55.88 mm |
| March | 10.6 °C | 23.5 °C | 70.61 mm |
| April | 14.1 °C | 26.9 °C | 70.36 mm |
| May | 18.8 °C | 30.6 °C | 109.73 mm |
| June | 22 °C | 33.7 °C | 88.14 mm |
| July | 22.9 °C | 35.3 °C | 62.48 mm |
| August | 22.7 °C | 36.1 °C | 75.95 mm |
| September | 20.1 °C | 32.9 °C | 89.92 mm |
| October | 14.9 °C | 28.7 °C | 75.95 mm |
| November | 9.6 °C | 22.9 °C | 66.55 mm |
| December | 5.7 °C | 18.6 °C | 61.21 mm |
| Annual | 14.4 °C | 27.3 °C | 878.85 mm |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Feb. 21 - Feb. 29 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 9a : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 9a : -6.7°C to -3.9°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |