Coldwater, Kansas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 7.1 °C (low) to 21.4 °C (high). Annual precipitation averages 652.5 Millimeters. Coldwater is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.5 °C | 8.4 °C | 18.54 mm |
| February | -3.8 °C | 10.6 °C | 20.57 mm |
| March | 0.9 °C | 16.1 °C | 41.4 mm |
| April | 5.9 °C | 21.4 °C | 57.15 mm |
| May | 12 °C | 26.2 °C | 82.8 mm |
| June | 17.6 °C | 31.2 °C | 102.87 mm |
| July | 20.1 °C | 34.1 °C | 87.63 mm |
| August | 19.2 °C | 33.1 °C | 86.61 mm |
| September | 14.8 °C | 29.2 °C | 45.97 mm |
| October | 7.8 °C | 22.8 °C | 56.64 mm |
| November | 0.9 °C | 15 °C | 25.91 mm |
| December | -4.2 °C | 8.8 °C | 26.42 mm |
| Annual | 7.1 °C | 21.4 °C | 652.51 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |