Western Grove, Arkansas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 47 °F (low) to 69.3 °F (high). Annual precipitation averages 48.4 Inches. Western Grove is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 26.1 °F | 46.8 °F | 3.13 in. |
| February | 29.3 °F | 51.4 °F | 3.04 in. |
| March | 36.9 °F | 60.0 °F | 4.64 in. |
| April | 46.0 °F | 69.8 °F | 5.36 in. |
| May | 55.6 °F | 77.1 °F | 5.33 in. |
| June | 64.0 °F | 85.2 °F | 3.98 in. |
| July | 67.7 °F | 89.6 °F | 3.73 in. |
| August | 66.1 °F | 89.2 °F | 3.31 in. |
| September | 58.3 °F | 82.4 °F | 4.09 in. |
| October | 47.1 °F | 71.7 °F | 3.87 in. |
| November | 37.1 °F | 59.4 °F | 4.33 in. |
| December | 29.2 °F | 49.4 °F | 3.57 in. |
| Annual | 47 °F | 69.3 °F | 48.38 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |