Three Springs, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 40.7 °F (low) to 62.7 °F (high). Annual precipitation averages 41.3 Inches. Three Springs is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 20.5 °F | 38.0 °F | 2.82 in. |
| February | 21.6 °F | 41.1 °F | 2.4 in. |
| March | 28.8 °F | 49.7 °F | 3.49 in. |
| April | 38.5 °F | 63.1 °F | 3.67 in. |
| May | 48.4 °F | 72.7 °F | 4.19 in. |
| June | 57.4 °F | 81.1 °F | 3.94 in. |
| July | 61.9 °F | 85.6 °F | 3.63 in. |
| August | 60.1 °F | 83.8 °F | 3.52 in. |
| September | 52.8 °F | 76.9 °F | 3.91 in. |
| October | 41.5 °F | 65.1 °F | 3.49 in. |
| November | 32.1 °F | 52.9 °F | 2.99 in. |
| December | 25.1 °F | 41.9 °F | 3.25 in. |
| Annual | 40.7 °F | 62.7 °F | 41.3 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |