Sun Valley, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 37.8 °F (low) to 58.4 °F (high). Annual precipitation averages 56.5 Inches. Sun Valley is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 16.5 °F | 33.8 °F | 4.3 in. |
| February | 17.5 °F | 36.5 °F | 3.12 in. |
| March | 25.0 °F | 44.7 °F | 4.12 in. |
| April | 35.4 °F | 58.3 °F | 4.65 in. |
| May | 45.6 °F | 68.9 °F | 4.51 in. |
| June | 54.5 °F | 76.8 °F | 5.54 in. |
| July | 59.3 °F | 81.3 °F | 5.3 in. |
| August | 57.6 °F | 79.5 °F | 5.18 in. |
| September | 50.7 °F | 72.8 °F | 5.6 in. |
| October | 39.4 °F | 60.6 °F | 5.5 in. |
| November | 30.0 °F | 49.2 °F | 3.97 in. |
| December | 22.4 °F | 38.4 °F | 4.67 in. |
| Annual | 37.8 °F | 58.4 °F | 56.46 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |