Red Hill, 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 17.4 °C (high). Annual precipitation averages 1242.1 Millimeters. Red Hill 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 | -5.7 °C | 3.8 °C | 88.65 mm |
| February | -4.9 °C | 5.4 °C | 72.9 mm |
| March | -1 °C | 10.1 °C | 101.09 mm |
| April | 4.7 °C | 17.2 °C | 98.04 mm |
| May | 10.1 °C | 22.7 °C | 105.41 mm |
| June | 15.2 °C | 27.6 °C | 115.57 mm |
| July | 17.9 °C | 30.3 °C | 123.19 mm |
| August | 17 °C | 29.2 °C | 112.78 mm |
| September | 12.9 °C | 25.4 °C | 124.97 mm |
| October | 6.4 °C | 18.7 °C | 110.49 mm |
| November | 1.1 °C | 12.3 °C | 84.58 mm |
| December | -2.7 °C | 6.6 °C | 104.39 mm |
| Annual | 5.9 °C | 17.4 °C | 1242.06 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| 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 | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |