Spring Hill, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 37.4 °F (low) to 57.7 °F (high). Annual precipitation averages 45.3 Inches. 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 | 17.0 °F | 33.2 °F | 3.32 in. |
| February | 17.9 °F | 36.2 °F | 2.89 in. |
| March | 24.6 °F | 44.7 °F | 3.72 in. |
| April | 35.2 °F | 58.4 °F | 3.83 in. |
| May | 45.6 °F | 68.1 °F | 4.36 in. |
| June | 54.0 °F | 75.9 °F | 4.34 in. |
| July | 58.0 °F | 79.6 °F | 4.31 in. |
| August | 56.4 °F | 78.3 °F | 4.1 in. |
| September | 49.7 °F | 72.0 °F | 4.16 in. |
| October | 39.1 °F | 60.3 °F | 3.52 in. |
| November | 29.3 °F | 48.0 °F | 3.22 in. |
| December | 22.3 °F | 37.4 °F | 3.57 in. |
| Annual | 37.4 °F | 57.7 °F | 45.34 in. |
| 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 : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |