Emerson, Arkansas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 11.3 °C (low) to 24.2 °C (high). Annual precipitation averages 1412.5 Millimeters. Emerson is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 0.9 °C | 13.2 °C | 120.65 mm |
| February | 2.4 °C | 15.5 °C | 122.17 mm |
| March | 6.3 °C | 20 °C | 144.02 mm |
| April | 10.4 °C | 24.2 °C | 140.97 mm |
| May | 15.8 °C | 28.1 °C | 125.22 mm |
| June | 20.1 °C | 31.8 °C | 109.47 mm |
| July | 21.8 °C | 33.8 °C | 97.03 mm |
| August | 21.3 °C | 34 °C | 84.58 mm |
| September | 17.6 °C | 30.9 °C | 99.06 mm |
| October | 10.9 °C | 25.2 °C | 124.71 mm |
| November | 5.6 °C | 18.8 °C | 107.44 mm |
| December | 2.1 °C | 14.3 °C | 137.16 mm |
| Annual | 11.3 °C | 24.2 °C | 1412.48 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 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 |