Dickinson, North Dakota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 30.2 °F (low) to 54.6 °F (high). Annual precipitation averages 16.8 Inches. Dickinson is located in USDA Plant Hardiness Zone 4a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 4.7 °F | 25.2 °F | 0.33 in. |
| February | 8.2 °F | 29.6 °F | 0.45 in. |
| March | 18.0 °F | 40.9 °F | 0.75 in. |
| April | 28.7 °F | 54.1 °F | 1.19 in. |
| May | 40.3 °F | 65.4 °F | 2.62 in. |
| June | 50.4 °F | 74.8 °F | 3.23 in. |
| July | 55.8 °F | 82.9 °F | 2.53 in. |
| August | 53.6 °F | 83.0 °F | 1.67 in. |
| September | 43.9 °F | 72.8 °F | 1.74 in. |
| October | 31.3 °F | 56.6 °F | 1.35 in. |
| November | 18.8 °F | 40.7 °F | 0.55 in. |
| December | 8.9 °F | 29.2 °F | 0.4 in. |
| Annual | 30.2 °F | 54.6 °F | 16.81 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | Over 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 | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |