Strawn, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11.8 °C (low) to 25.3 °C (high). Annual precipitation averages 813.6 Millimeters. Strawn 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 | 0.6 °C | 14.6 °C | 41.66 mm |
| February | 2.4 °C | 16.4 °C | 53.85 mm |
| March | 6.8 °C | 20.8 °C | 71.12 mm |
| April | 11.4 °C | 25.4 °C | 67.06 mm |
| May | 16.4 °C | 29.1 °C | 109.22 mm |
| June | 20.9 °C | 33.2 °C | 92.2 mm |
| July | 22.8 °C | 35.6 °C | 53.59 mm |
| August | 22.4 °C | 35.6 °C | 64.01 mm |
| September | 18.3 °C | 31.7 °C | 79.5 mm |
| October | 12.1 °C | 26.2 °C | 86.11 mm |
| November | 6 °C | 19.7 °C | 49.53 mm |
| December | 1.2 °C | 14.8 °C | 45.72 mm |
| Annual | 11.8 °C | 25.3 °C | 813.57 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |