Marienthal, Kansas has a Cold Semi-Arid Climate climate (Köppen classification: BSk). Average annual temperatures range from 3.7 °C (low) to 19.6 °C (high). Annual precipitation averages 482.6 Millimeters. Marienthal is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -8.4 °C | 6.8 °C | 9.65 mm |
| February | -7.1 °C | 8.6 °C | 11.94 mm |
| March | -2.7 °C | 14.1 °C | 25.91 mm |
| April | 1.9 °C | 18.6 °C | 41.66 mm |
| May | 8.3 °C | 23.9 °C | 64.52 mm |
| June | 14.4 °C | 30.4 °C | 66.55 mm |
| July | 17.3 °C | 33.2 °C | 82.3 mm |
| August | 16.2 °C | 31.6 °C | 76.45 mm |
| September | 11.2 °C | 27.7 °C | 35.05 mm |
| October | 3.5 °C | 20.4 °C | 38.1 mm |
| November | -3 °C | 12.9 °C | 14.48 mm |
| December | -7.7 °C | 7.3 °C | 16 mm |
| Annual | 3.7 °C | 19.6 °C | 482.61 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | BSk - Cold Semi-Arid Climate |