Pampa, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 6.7 °C (low) to 21.5 °C (high). Annual precipitation averages 557.3 Millimeters. Pampa is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4.8 °C | 9.8 °C | 19.81 mm |
| February | -3.3 °C | 11.9 °C | 15.24 mm |
| March | 0.8 °C | 16.9 °C | 36.32 mm |
| April | 5.3 °C | 21.3 °C | 50.55 mm |
| May | 11.1 °C | 25.8 °C | 73.15 mm |
| June | 16.6 °C | 30.8 °C | 76.71 mm |
| July | 18.9 °C | 33.2 °C | 61.47 mm |
| August | 18.2 °C | 32.4 °C | 78.49 mm |
| September | 14.1 °C | 28.2 °C | 45.21 mm |
| October | 7.2 °C | 22 °C | 54.1 mm |
| November | 0.4 °C | 15.6 °C | 22.61 mm |
| December | -4 °C | 10 °C | 23.62 mm |
| Annual | 6.7 °C | 21.5 °C | 557.28 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |