Elgin, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 3 °C (low) to 14.1 °C (high). Annual precipitation averages 1240.3 Millimeters. Elgin 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 | 0.2 °C | 100.84 mm |
| February | -8.4 °C | 1.4 °C | 71.63 mm |
| March | -4.4 °C | 6.5 °C | 90.17 mm |
| April | 1.3 °C | 14.1 °C | 103.63 mm |
| May | 7.3 °C | 20.4 °C | 106.68 mm |
| June | 12.2 °C | 24.6 °C | 116.84 mm |
| July | 14.3 °C | 26.7 °C | 121.16 mm |
| August | 13.7 °C | 26.1 °C | 95.5 mm |
| September | 10.1 °C | 22.5 °C | 112.78 mm |
| October | 4.3 °C | 15.8 °C | 114.55 mm |
| November | -0.6 °C | 8.7 °C | 98.55 mm |
| December | -4.7 °C | 2.7 °C | 107.95 mm |
| Annual | 3 °C | 14.1 °C | 1240.28 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 | Dfa - Humid Continental Hot Summers With Year Around Precipitation |