Monango, North Dakota has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -0.2 °C (low) to 11.7 °C (high). Annual precipitation averages 573 Millimeters. Monango is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -16.7 °C | -6.4 °C | 13.72 mm |
| February | -14.5 °C | -3.8 °C | 15.49 mm |
| March | -7.8 °C | 3.1 °C | 25.15 mm |
| April | -0.7 °C | 12.2 °C | 40.89 mm |
| May | 6.7 °C | 19.4 °C | 82.8 mm |
| June | 12.7 °C | 24.7 °C | 100.08 mm |
| July | 15.1 °C | 27.6 °C | 85.34 mm |
| August | 13.5 °C | 26.9 °C | 62.23 mm |
| September | 8.3 °C | 22.2 °C | 61.47 mm |
| October | 1 °C | 13.5 °C | 51.05 mm |
| November | -6.6 °C | 4 °C | 17.53 mm |
| December | -13 °C | -3.6 °C | 17.27 mm |
| Annual | -0.2 °C | 11.7 °C | 573.02 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4b : -31.7°C to -28.9°C |
| Plant Hardiness Zone - 2012 | Zone 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |