Larimore, North Dakota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -1.4 °C (low) to 10.2 °C (high). Annual precipitation averages 556 Millimeters. 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 | -19.2 °C | -9.4 °C | 12.19 mm |
| February | -17.1 °C | -6.6 °C | 12.45 mm |
| March | -9.5 °C | 0.7 °C | 21.84 mm |
| April | -1.5 °C | 10.9 °C | 25.91 mm |
| May | 5.8 °C | 19.2 °C | 74.68 mm |
| June | 12.2 °C | 24.3 °C | 100.84 mm |
| July | 14.2 °C | 26.8 °C | 91.44 mm |
| August | 12.8 °C | 26.4 °C | 74.68 mm |
| September | 7.7 °C | 21.4 °C | 58.67 mm |
| October | 0.6 °C | 12.4 °C | 44.2 mm |
| November | -7.5 °C | 2 °C | 20.57 mm |
| December | -14.9 °C | -6 °C | 18.54 mm |
| Annual | -1.4 °C | 10.2 °C | 556.01 mm |
| 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 : -34.4°C to -31.7°C |
| Plant Hardiness Zone - 2012 | Zone 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |