Joaquin, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12.2 °C (low) to 25.1 °C (high). Annual precipitation averages 1373.1 Millimeters. Joaquin 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 | 2.2 °C | 14.6 °C | 129.03 mm |
| February | 4 °C | 17 °C | 118.11 mm |
| March | 7.7 °C | 21.1 °C | 135.89 mm |
| April | 11.6 °C | 25 °C | 125.22 mm |
| May | 16.7 °C | 28.9 °C | 115.82 mm |
| June | 20.7 °C | 32.4 °C | 112.27 mm |
| July | 22.2 °C | 34.3 °C | 87.63 mm |
| August | 21.7 °C | 34.6 °C | 87.88 mm |
| September | 18.2 °C | 31.6 °C | 90.93 mm |
| October | 11.7 °C | 26.2 °C | 119.63 mm |
| November | 6.4 °C | 19.8 °C | 113.28 mm |
| December | 3.1 °C | 15.3 °C | 137.41 mm |
| Annual | 12.2 °C | 25.1 °C | 1373.1 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 | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |