Riegelsville, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.9 °C (low) to 17.5 °C (high). Annual precipitation averages 1284 Millimeters. Riegelsville is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.8 °C | 3.8 °C | 89.15 mm |
| February | -4.9 °C | 5.4 °C | 77.22 mm |
| March | -1.1 °C | 10.3 °C | 101.85 mm |
| April | 4.4 °C | 17.2 °C | 100.84 mm |
| May | 10.1 °C | 22.8 °C | 106.68 mm |
| June | 15.4 °C | 27.6 °C | 120.14 mm |
| July | 18 °C | 30.2 °C | 131.06 mm |
| August | 16.9 °C | 29.1 °C | 120.65 mm |
| September | 12.7 °C | 25.4 °C | 122.68 mm |
| October | 6.4 °C | 18.8 °C | 117.09 mm |
| November | 1.3 °C | 12.6 °C | 86.61 mm |
| December | -2.7 °C | 6.5 °C | 109.98 mm |
| Annual | 5.9 °C | 17.5 °C | 1283.95 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°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 |