Elgin, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 37.5 °F (low) to 57.4 °F (high). Annual precipitation averages 48.8 Inches. 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 | 16.4 °F | 32.3 °F | 3.97 in. |
| February | 16.9 °F | 34.6 °F | 2.82 in. |
| March | 24.0 °F | 43.7 °F | 3.55 in. |
| April | 34.3 °F | 57.3 °F | 4.08 in. |
| May | 45.1 °F | 68.7 °F | 4.2 in. |
| June | 54.0 °F | 76.3 °F | 4.6 in. |
| July | 57.8 °F | 80.1 °F | 4.77 in. |
| August | 56.6 °F | 78.9 °F | 3.76 in. |
| September | 50.1 °F | 72.5 °F | 4.44 in. |
| October | 39.8 °F | 60.5 °F | 4.51 in. |
| November | 31.0 °F | 47.6 °F | 3.88 in. |
| December | 23.5 °F | 36.8 °F | 4.25 in. |
| Annual | 37.5 °F | 57.4 °F | 48.83 in. |
| 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 : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |