Rhame, North Dakota has a Humid Continental Mild Summer With Dry Winters climate (Köppen classification: Dwb). Average annual temperatures range from -0.2 °C (low) to 12.7 °C (high). Annual precipitation averages 410.5 Millimeters. Rhame is located in USDA Plant Hardiness Zone 4b. 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 | -12.8 °C | -2.5 °C | 10.16 mm |
| February | -11.4 °C | -0.4 °C | 11.43 mm |
| March | -6.9 °C | 5.4 °C | 19.05 mm |
| April | -1.6 °C | 11.8 °C | 33.27 mm |
| May | 4.7 °C | 17.6 °C | 64.77 mm |
| June | 10.2 °C | 23.2 °C | 78.23 mm |
| July | 13.6 °C | 28.6 °C | 57.15 mm |
| August | 12.3 °C | 28.3 °C | 37.59 mm |
| September | 6.8 °C | 22.5 °C | 38.1 mm |
| October | 0.2 °C | 13.4 °C | 37.34 mm |
| November | -6.2 °C | 5.4 °C | 12.95 mm |
| December | -11.2 °C | -0.7 °C | 10.41 mm |
| Annual | -0.2 °C | 12.7 °C | 410.45 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | Over 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 | Moderate Drought |
| Köppen Climate Classification | Dwb - Humid Continental Mild Summer With Dry Winters |