Redfield, Kansas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 7.6 °C (low) to 19.6 °C (high). Annual precipitation averages 1132.3 Millimeters. Redfield 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 | -5.6 °C | 5.4 °C | 38.86 mm |
| February | -3.5 °C | 8.4 °C | 44.7 mm |
| March | 1.4 °C | 13.9 °C | 79.76 mm |
| April | 7 °C | 19.7 °C | 123.7 mm |
| May | 12.9 °C | 24.4 °C | 154.69 mm |
| June | 18.2 °C | 29.6 °C | 146.81 mm |
| July | 20.6 °C | 32.1 °C | 114.55 mm |
| August | 19.5 °C | 31.9 °C | 106.43 mm |
| September | 14.5 °C | 27.4 °C | 112.78 mm |
| October | 7.9 °C | 21.1 °C | 88.65 mm |
| November | 1.7 °C | 13.7 °C | 66.8 mm |
| December | -3.4 °C | 7.4 °C | 54.61 mm |
| Annual | 7.6 °C | 19.6 °C | 1132.34 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 | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |