Hamberg, North Dakota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 29.5 °F (low) to 51 °F (high). Annual precipitation averages 19.8 Inches. Hamberg is located in USDA Plant Hardiness Zone 4a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -0.7 °F | 17.6 °F | 0.42 in. |
| February | 2.6 °F | 22.0 °F | 0.44 in. |
| March | 15.2 °F | 34.3 °F | 0.67 in. |
| April | 28.7 °F | 51.9 °F | 1.1 in. |
| May | 41.8 °F | 66.1 °F | 2.72 in. |
| June | 52.9 °F | 75.0 °F | 3.86 in. |
| July | 57.2 °F | 80.3 °F | 3.39 in. |
| August | 54.5 °F | 80.1 °F | 2.39 in. |
| September | 45.5 °F | 71.0 °F | 2.07 in. |
| October | 32.4 °F | 54.6 °F | 1.46 in. |
| November | 18.1 °F | 36.4 °F | 0.67 in. |
| December | 5.6 °F | 22.5 °F | 0.64 in. |
| Annual | 29.5 °F | 51 °F | 19.83 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4a : -30°F to -25°F |
| Plant Hardiness Zone - 2012 | Zone 4a : -30°F to -25°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |