Longview, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12.4 °C (low) to 24.8 °C (high). Annual precipitation averages 1253.2 Millimeters. Longview is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 1 - Mar. 10 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 1.9 °C | 13.9 °C | 102.87 mm |
| February | 3.9 °C | 16.3 °C | 105.66 mm |
| March | 7.8 °C | 20.5 °C | 124.97 mm |
| April | 11.7 °C | 24.9 °C | 113.79 mm |
| May | 17.1 °C | 28.7 °C | 127.25 mm |
| June | 21.1 °C | 32.5 °C | 114.3 mm |
| July | 22.7 °C | 34.4 °C | 67.06 mm |
| August | 22.3 °C | 34.7 °C | 72.9 mm |
| September | 18.7 °C | 31.6 °C | 95.25 mm |
| October | 12.4 °C | 26 °C | 113.28 mm |
| November | 6.8 °C | 19.4 °C | 95.5 mm |
| December | 2.9 °C | 14.8 °C | 120.4 mm |
| Annual | 12.4 °C | 24.8 °C | 1253.23 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 8b : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |