Hamberg, North Dakota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -1.4 °C (low) to 10.5 °C (high). Annual precipitation averages 503.7 Millimeters. 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 | -18.2 °C | -8 °C | 10.67 mm |
| February | -16.3 °C | -5.6 °C | 11.18 mm |
| March | -9.3 °C | 1.3 °C | 17.02 mm |
| April | -1.8 °C | 11.1 °C | 27.94 mm |
| May | 5.4 °C | 18.9 °C | 69.09 mm |
| June | 11.6 °C | 23.9 °C | 98.04 mm |
| July | 14 °C | 26.8 °C | 86.11 mm |
| August | 12.5 °C | 26.7 °C | 60.71 mm |
| September | 7.5 °C | 21.7 °C | 52.58 mm |
| October | 0.2 °C | 12.6 °C | 37.08 mm |
| November | -7.7 °C | 2.4 °C | 17.02 mm |
| December | -14.7 °C | -5.3 °C | 16.26 mm |
| Annual | -1.4 °C | 10.5 °C | 503.7 mm |
| 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 : -34.4°C to -31.7°C |
| Plant Hardiness Zone - 2012 | Zone 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |