Spring Hill, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 3 °C (low) to 14.3 °C (high). Annual precipitation averages 1151.6 Millimeters. Spring Hill is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -8.3 °C | 0.7 °C | 84.33 mm |
| February | -7.8 °C | 2.3 °C | 73.41 mm |
| March | -4.1 °C | 7.1 °C | 94.49 mm |
| April | 1.8 °C | 14.7 °C | 97.28 mm |
| May | 7.6 °C | 20.1 °C | 110.74 mm |
| June | 12.2 °C | 24.4 °C | 110.24 mm |
| July | 14.4 °C | 26.4 °C | 109.47 mm |
| August | 13.6 °C | 25.7 °C | 104.14 mm |
| September | 9.8 °C | 22.2 °C | 105.66 mm |
| October | 3.9 °C | 15.7 °C | 89.41 mm |
| November | -1.5 °C | 8.9 °C | 81.79 mm |
| December | -5.4 °C | 3 °C | 90.68 mm |
| Annual | 3 °C | 14.3 °C | 1151.64 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |