Starkweather, North Dakota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 28.2 °F (low) to 48.4 °F (high). Annual precipitation averages 19.8 Inches. Starkweather is located in USDA Plant Hardiness Zone 3b. 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 | -3.5 °F | 14.1 °F | 0.47 in. |
| February | -0.5 °F | 18.9 °F | 0.44 in. |
| March | 12.9 °F | 31.2 °F | 0.67 in. |
| April | 28.3 °F | 49.2 °F | 0.99 in. |
| May | 41.2 °F | 64.3 °F | 2.81 in. |
| June | 52.8 °F | 73.1 °F | 3.87 in. |
| July | 56.9 °F | 78.1 °F | 3.36 in. |
| August | 54.2 °F | 77.7 °F | 2.63 in. |
| September | 44.6 °F | 68.5 °F | 2.03 in. |
| October | 31.6 °F | 52.4 °F | 1.39 in. |
| November | 17.0 °F | 34.0 °F | 0.62 in. |
| December | 3.4 °F | 19.4 °F | 0.54 in. |
| Annual | 28.2 °F | 48.4 °F | 19.82 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 3b : -35°F to -30°F |
| Plant Hardiness Zone - 2012 | Zone 3b : -35°F to -30°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |