Sherwood, North Dakota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -2.3 °C (low) to 9.9 °C (high). Annual precipitation averages 439.2 Millimeters. Sherwood 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 | -19.1 °C | -8.9 °C | 11.18 mm |
| February | -16.9 °C | -6.3 °C | 9.14 mm |
| March | -10.2 °C | 0.3 °C | 17.53 mm |
| April | -2.3 °C | 10.8 °C | 22.86 mm |
| May | 4.6 °C | 18.3 °C | 66.29 mm |
| June | 10.7 °C | 23.1 °C | 93.73 mm |
| July | 12.8 °C | 26.2 °C | 68.58 mm |
| August | 11.4 °C | 26.5 °C | 52.32 mm |
| September | 6.3 °C | 21.1 °C | 38.35 mm |
| October | -0.9 °C | 11.8 °C | 29.72 mm |
| November | -8.7 °C | 1.5 °C | 14.48 mm |
| December | -15.8 °C | -6.2 °C | 14.99 mm |
| Annual | -2.3 °C | 9.9 °C | 439.17 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 3b : -37.2°C to -34.4°C |
| Plant Hardiness Zone - 2012 | Zone 3b : -37.2°C to -34.4°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |