York Haven, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.7 °C (low) to 17.3 °C (high). Annual precipitation averages 1111.5 Millimeters. York Haven is located in USDA Plant Hardiness Zone 7a. 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 | -5.1 °C | 3.7 °C | 77.22 mm |
| February | -4.6 °C | 5.2 °C | 64.52 mm |
| March | -0.3 °C | 10.2 °C | 95 mm |
| April | 5.4 °C | 17.2 °C | 86.36 mm |
| May | 11.1 °C | 22.7 °C | 101.35 mm |
| June | 16.4 °C | 27.4 °C | 103.38 mm |
| July | 18.8 °C | 30.2 °C | 113.54 mm |
| August | 17.8 °C | 29.2 °C | 95 mm |
| September | 13.8 °C | 25.2 °C | 111.76 mm |
| October | 7.5 °C | 18.4 °C | 101.09 mm |
| November | 1.8 °C | 12.1 °C | 76.2 mm |
| December | -2.3 °C | 6.1 °C | 86.11 mm |
| Annual | 6.7 °C | 17.3 °C | 1111.53 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 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |