Eyers Grove, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 4.5 °C (low) to 16.1 °C (high). Annual precipitation averages 1151.1 Millimeters. Eyers Grove 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -7.3 °C | 2 °C | 89.66 mm |
| February | -6.5 °C | 3.6 °C | 62.99 mm |
| March | -2.4 °C | 8.7 °C | 90.93 mm |
| April | 3.2 °C | 16.2 °C | 96.01 mm |
| May | 8.8 °C | 22.2 °C | 96.27 mm |
| June | 13.9 °C | 26.6 °C | 119.38 mm |
| July | 16.3 °C | 29.1 °C | 111.51 mm |
| August | 15.5 °C | 28.1 °C | 100.58 mm |
| September | 11.4 °C | 24.3 °C | 113.28 mm |
| October | 5.2 °C | 17.5 °C | 102.87 mm |
| November | 0.2 °C | 10.7 °C | 78.99 mm |
| December | -4 °C | 4.7 °C | 88.65 mm |
| Annual | 4.5 °C | 16.1 °C | 1151.12 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°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 |