Brisbin, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2.7 °C (low) to 14.3 °C (high). Annual precipitation averages 1081.5 Millimeters. Brisbin 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -8.7 °C | 0.4 °C | 71.37 mm |
| February | -8.3 °C | 2.2 °C | 56.9 mm |
| March | -4.6 °C | 7 °C | 78.49 mm |
| April | 1.4 °C | 14.6 °C | 95.25 mm |
| May | 7.3 °C | 20.6 °C | 104.39 mm |
| June | 11.8 °C | 24.7 °C | 113.79 mm |
| July | 14.2 °C | 26.8 °C | 109.98 mm |
| August | 13.4 °C | 26.1 °C | 109.98 mm |
| September | 9.4 °C | 22.3 °C | 100.33 mm |
| October | 3.6 °C | 15.5 °C | 89.15 mm |
| November | -1.4 °C | 8.9 °C | 75.69 mm |
| December | -5.4 °C | 2.7 °C | 76.2 mm |
| Annual | 2.7 °C | 14.3 °C | 1081.52 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| 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 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |