Hamburg, Arkansas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 52.4 °F (low) to 75 °F (high). Annual precipitation averages 56.5 Inches. Hamburg is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 33.1 °F | 54.4 °F | 5.07 in. |
| February | 36.2 °F | 58.9 °F | 5.32 in. |
| March | 43.5 °F | 67.1 °F | 5.14 in. |
| April | 51.7 °F | 75.3 °F | 5.54 in. |
| May | 60.9 °F | 82.5 °F | 4.61 in. |
| June | 68.6 °F | 89.5 °F | 4.03 in. |
| July | 71.6 °F | 92.1 °F | 4.05 in. |
| August | 70.3 °F | 92.4 °F | 4.33 in. |
| September | 63.4 °F | 87.6 °F | 3.56 in. |
| October | 51.5 °F | 77.6 °F | 4.89 in. |
| November | 41.8 °F | 65.4 °F | 4.41 in. |
| December | 35.6 °F | 56.8 °F | 5.53 in. |
| Annual | 52.4 °F | 75 °F | 56.48 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |