Larimore, North Dakota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 29.6 °F (low) to 50.3 °F (high). Annual precipitation averages 21.9 Inches. Larimore 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 | -2.5 °F | 15.1 °F | 0.48 in. |
| February | 1.2 °F | 20.2 °F | 0.49 in. |
| March | 14.9 °F | 33.2 °F | 0.86 in. |
| April | 29.3 °F | 51.6 °F | 1.02 in. |
| May | 42.5 °F | 66.6 °F | 2.94 in. |
| June | 53.9 °F | 75.8 °F | 3.97 in. |
| July | 57.6 °F | 80.2 °F | 3.6 in. |
| August | 55.1 °F | 79.6 °F | 2.94 in. |
| September | 45.9 °F | 70.5 °F | 2.31 in. |
| October | 33.1 °F | 54.4 °F | 1.74 in. |
| November | 18.5 °F | 35.6 °F | 0.81 in. |
| December | 5.2 °F | 21.2 °F | 0.73 in. |
| Annual | 29.6 °F | 50.3 °F | 21.89 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| 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 |