Clifford, North Dakota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 30.4 °F (low) to 51 °F (high). Annual precipitation averages 22.4 Inches. Clifford 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 | -1.6 °F | 16.1 °F | 0.58 in. |
| February | 2.4 °F | 21.4 °F | 0.54 in. |
| March | 15.7 °F | 33.9 °F | 0.9 in. |
| April | 30.2 °F | 51.9 °F | 1.19 in. |
| May | 43.2 °F | 66.5 °F | 2.77 in. |
| June | 54.8 °F | 76.0 °F | 3.95 in. |
| July | 58.4 °F | 80.5 °F | 3.77 in. |
| August | 55.4 °F | 79.5 °F | 2.71 in. |
| September | 46.4 °F | 71.0 °F | 2.52 in. |
| October | 33.9 °F | 55.2 °F | 1.93 in. |
| November | 19.5 °F | 37.2 °F | 0.79 in. |
| December | 6.4 °F | 22.3 °F | 0.75 in. |
| Annual | 30.4 °F | 51 °F | 22.4 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 |