Troy, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.7 °C (low) to 17.6 °C (high). Annual precipitation averages 939.3 Millimeters. Troy is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -8.4 °C | 2.1 °C | 23.62 mm |
| February | -6.2 °C | 5.2 °C | 33.53 mm |
| March | -0.8 °C | 11.9 °C | 55.88 mm |
| April | 5.1 °C | 18.2 °C | 93.98 mm |
| May | 11.5 °C | 23.4 °C | 130.05 mm |
| June | 17.1 °C | 28.4 °C | 121.67 mm |
| July | 19.1 °C | 30.5 °C | 129.54 mm |
| August | 18.1 °C | 30 °C | 98.55 mm |
| September | 12.9 °C | 25.9 °C | 88.14 mm |
| October | 6.5 °C | 19.6 °C | 77.72 mm |
| November | -0.3 °C | 11.4 °C | 48.51 mm |
| December | -5.7 °C | 4.4 °C | 38.1 mm |
| Annual | 5.7 °C | 17.6 °C | 939.29 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 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 | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |