Princeton, Kansas has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 7.4 °C (low) to 19.2 °C (high). Annual precipitation averages 1027.2 Millimeters. Princeton 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 | -6 °C | 4.9 °C | 30.48 mm |
| February | -4 °C | 7.3 °C | 39.88 mm |
| March | 1.1 °C | 13.7 °C | 60.45 mm |
| April | 6.6 °C | 19.2 °C | 102.62 mm |
| May | 12.8 °C | 24.1 °C | 141.99 mm |
| June | 18.2 °C | 29.3 °C | 139.19 mm |
| July | 20.4 °C | 31.9 °C | 103.63 mm |
| August | 19.3 °C | 31.3 °C | 110.49 mm |
| September | 14.4 °C | 27.1 °C | 114.3 mm |
| October | 7.7 °C | 21 °C | 87.88 mm |
| November | 1.5 °C | 13.3 °C | 54.1 mm |
| December | -3.8 °C | 6.7 °C | 42.16 mm |
| Annual | 7.4 °C | 19.2 °C | 1027.17 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 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |