Richboro, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 7 °C (low) to 17.5 °C (high). Annual precipitation averages 1248.9 Millimeters. Richboro 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 | -4.7 °C | 4.3 °C | 90.93 mm |
| February | -3.9 °C | 5.8 °C | 68.33 mm |
| March | 0 °C | 10.3 °C | 108.2 mm |
| April | 5.7 °C | 17.1 °C | 96.01 mm |
| May | 11.2 °C | 22.4 °C | 108.46 mm |
| June | 16.3 °C | 27.4 °C | 115.06 mm |
| July | 19.2 °C | 30 °C | 125.22 mm |
| August | 18.3 °C | 29 °C | 130.05 mm |
| September | 14.4 °C | 25.4 °C | 108.46 mm |
| October | 7.7 °C | 18.8 °C | 102.36 mm |
| November | 2.2 °C | 12.6 °C | 84.84 mm |
| December | -1.9 °C | 7.1 °C | 111 mm |
| Annual | 7 °C | 17.5 °C | 1248.92 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 | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |