Mountain Home, Arkansas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.1 °C (low) to 20.8 °C (high). Annual precipitation averages 1244.6 Millimeters. Mountain Home is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -3.7 °C | 8.1 °C | 86.87 mm |
| February | -1.8 °C | 10.8 °C | 83.31 mm |
| March | 2.4 °C | 15.7 °C | 115.57 mm |
| April | 7.6 °C | 21.2 °C | 135.64 mm |
| May | 12.9 °C | 25.1 °C | 134.87 mm |
| June | 17.7 °C | 29.7 °C | 98.3 mm |
| July | 19.8 °C | 32 °C | 95 mm |
| August | 18.9 °C | 32 °C | 85.34 mm |
| September | 14.6 °C | 28.1 °C | 95 mm |
| October | 7.9 °C | 22 °C | 99.31 mm |
| November | 2.4 °C | 15.3 °C | 117.09 mm |
| December | -2 °C | 9.6 °C | 98.3 mm |
| Annual | 8.1 °C | 20.8 °C | 1244.6 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |