Haskell, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 10.5 °C (low) to 25 °C (high). Annual precipitation averages 657.1 Millimeters. Haskell 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 | -1.2 °C | 13.5 °C | 27.43 mm |
| February | 0.6 °C | 15.8 °C | 35.56 mm |
| March | 5 °C | 20.6 °C | 47.75 mm |
| April | 9.4 °C | 25.3 °C | 53.09 mm |
| May | 15.2 °C | 29.6 °C | 80.52 mm |
| June | 20.1 °C | 33.5 °C | 98.55 mm |
| July | 22.2 °C | 35.8 °C | 46.99 mm |
| August | 21.6 °C | 35.4 °C | 59.69 mm |
| September | 17.3 °C | 31 °C | 78.74 mm |
| October | 11.1 °C | 25.6 °C | 57.4 mm |
| November | 4.6 °C | 19.1 °C | 39.37 mm |
| December | -0.2 °C | 14.2 °C | 32 mm |
| Annual | 10.5 °C | 25 °C | 657.09 mm |
| 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 : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 7b : -15°C to -12.2°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |