Streetman, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 13.2 °C (low) to 25.3 °C (high). Annual precipitation averages 1077.5 Millimeters. Streetman 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 | 2.8 °C | 14.7 °C | 81.28 mm |
| February | 4.7 °C | 16.7 °C | 83.06 mm |
| March | 8.7 °C | 20.8 °C | 99.06 mm |
| April | 12.2 °C | 24.9 °C | 93.73 mm |
| May | 17.6 °C | 28.7 °C | 113.03 mm |
| June | 21.7 °C | 32.7 °C | 101.35 mm |
| July | 23 °C | 34.8 °C | 51.05 mm |
| August | 22.8 °C | 35.5 °C | 65.02 mm |
| September | 19.4 °C | 32.1 °C | 83.82 mm |
| October | 13.4 °C | 26.6 °C | 122.43 mm |
| November | 7.8 °C | 20.3 °C | 87.63 mm |
| December | 3.7 °C | 15.6 °C | 96.01 mm |
| Annual | 13.2 °C | 25.3 °C | 1077.47 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 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |