Deer Lake, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.8 °C (low) to 16.8 °C (high). Annual precipitation averages 1317.8 Millimeters. Deer Lake is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -7.2 °C | 1.6 °C | 116.59 mm |
| February | -6.6 °C | 3.4 °C | 93.47 mm |
| March | -2.6 °C | 8.4 °C | 119.38 mm |
| April | 2.9 °C | 15.8 °C | 118.62 mm |
| May | 8.3 °C | 20.8 °C | 128.02 mm |
| June | 12.9 °C | 24.7 °C | 142.49 mm |
| July | 15.3 °C | 26.5 °C | 132.84 mm |
| August | 14.4 °C | 25.9 °C | 115.06 mm |
| September | 10.6 °C | 22.6 °C | 113.54 mm |
| October | 4.8 °C | 16.3 °C | 100.58 mm |
| November | -0.5 °C | 9.6 °C | 105.92 mm |
| December | -4.7 °C | 3.8 °C | 110.24 mm |
| Annual | 4 °C | 15 °C | 1396.75 mm |
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6.8 °C | 3.1 °C | 98.04 mm |
| February | -6.2 °C | 4.7 °C | 71.88 mm |
| March | -1.9 °C | 9.3 °C | 101.35 mm |
| April | 3.6 °C | 16.6 °C | 105.92 mm |
| May | 9.2 °C | 22.2 °C | 105.41 mm |
| June | 14.3 °C | 26.9 °C | 134.87 mm |
| July | 16.7 °C | 29.5 °C | 130.81 mm |
| August | 15.7 °C | 28.6 °C | 118.36 mm |
| September | 11.7 °C | 24.7 °C | 135.64 mm |
| October | 5.3 °C | 18.2 °C | 116.08 mm |
| November | 0.2 °C | 11.6 °C | 91.95 mm |
| December | -3.8 °C | 5.7 °C | 107.44 mm |
| Annual | 4.8 °C | 16.8 °C | 1317.75 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 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |