Treasure Lake, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 37.7 °F (low) to 57.1 °F (high). Annual precipitation averages 45.7 Inches. Treasure Lake 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 | 16.6 °F | 31.9 °F | 3.46 in. |
| February | 17.4 °F | 34.9 °F | 2.62 in. |
| March | 24.1 °F | 43.6 °F | 3.46 in. |
| April | 35.6 °F | 58.1 °F | 3.92 in. |
| May | 46.0 °F | 68.7 °F | 4.11 in. |
| June | 54.3 °F | 75.6 °F | 4.71 in. |
| July | 58.4 °F | 79.6 °F | 4.41 in. |
| August | 57.1 °F | 78.1 °F | 4.15 in. |
| September | 50.6 °F | 71.5 °F | 4.08 in. |
| October | 39.8 °F | 59.6 °F | 3.6 in. |
| November | 30.2 °F | 47.1 °F | 3.56 in. |
| December | 22.6 °F | 36.1 °F | 3.57 in. |
| Annual | 37.7 °F | 57.1 °F | 45.65 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 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |