Briar Creek, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 5.2 °C (low) to 16.8 °C (high). Annual precipitation averages 1108.7 Millimeters. Briar Creek is located in USDA Plant Hardiness Zone 6b. 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 | -6.7 °C | 2.7 °C | 72.39 mm |
| February | -5.8 °C | 4.3 °C | 57.15 mm |
| March | -1.8 °C | 9.3 °C | 75.18 mm |
| April | 3.8 °C | 16.9 °C | 96.77 mm |
| May | 9.4 °C | 23 °C | 97.54 mm |
| June | 14.6 °C | 27.3 °C | 119.63 mm |
| July | 17 °C | 29.9 °C | 117.6 mm |
| August | 16.1 °C | 28.8 °C | 105.66 mm |
| September | 12.1 °C | 25 °C | 122.94 mm |
| October | 5.8 °C | 18.2 °C | 93.22 mm |
| November | 0.8 °C | 11.2 °C | 73.66 mm |
| December | -3.4 °C | 5.3 °C | 76.96 mm |
| Annual | 5.2 °C | 16.8 °C | 1108.7 mm |
| 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 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |