Dawson, North Dakota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -0.7 °C (low) to 11.3 °C (high). Annual precipitation averages 515.6 Millimeters. Dawson 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 | -17.2 °C | -6.9 °C | 11.94 mm |
| February | -15.1 °C | -4.4 °C | 11.18 mm |
| March | -8.3 °C | 2.6 °C | 17.53 mm |
| April | -1.2 °C | 11.8 °C | 32.26 mm |
| May | 5.9 °C | 18.9 °C | 73.91 mm |
| June | 11.9 °C | 23.9 °C | 93.98 mm |
| July | 14.6 °C | 27.5 °C | 86.61 mm |
| August | 13.2 °C | 27.1 °C | 57.4 mm |
| September | 8.1 °C | 22 °C | 54.1 mm |
| October | 0.7 °C | 13.2 °C | 43.18 mm |
| November | -7.2 °C | 3.6 °C | 17.02 mm |
| December | -13.6 °C | -3.9 °C | 16.51 mm |
| Annual | -0.7 °C | 11.3 °C | 515.62 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 |