Sterling, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 7.1 °C (low) to 19.6 °C (high). Annual precipitation averages 740.4 Millimeters. Sterling is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.8 °C | 5.9 °C | 19.05 mm |
| February | -4.2 °C | 8 °C | 26.42 mm |
| March | 1.2 °C | 13.9 °C | 49.78 mm |
| April | 6.2 °C | 19 °C | 61.47 mm |
| May | 12.3 °C | 24.4 °C | 119.63 mm |
| June | 18 °C | 30.4 °C | 103.89 mm |
| July | 20.3 °C | 32.7 °C | 96.77 mm |
| August | 19.2 °C | 31.7 °C | 93.47 mm |
| September | 14.6 °C | 27.7 °C | 53.85 mm |
| October | 7.3 °C | 20.9 °C | 60.71 mm |
| November | 0.6 °C | 13.3 °C | 29.46 mm |
| December | -4.4 °C | 6.7 °C | 25.91 mm |
| Annual | 7.1 °C | 19.6 °C | 740.41 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |