Lima, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 7.3 °C (low) to 17.4 °C (high). Annual precipitation averages 1202.2 Millimeters. Lima is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -4.4 °C | 4.2 °C | 89.92 mm |
| February | -3.7 °C | 5.6 °C | 72.9 mm |
| March | 0.1 °C | 10.3 °C | 109.22 mm |
| April | 5.9 °C | 17.1 °C | 93.98 mm |
| May | 11.2 °C | 22.3 °C | 96.77 mm |
| June | 16.5 °C | 27.3 °C | 113.54 mm |
| July | 19.6 °C | 29.7 °C | 116.59 mm |
| August | 18.7 °C | 28.9 °C | 112.52 mm |
| September | 14.8 °C | 25.4 °C | 114.81 mm |
| October | 8.2 °C | 18.6 °C | 99.82 mm |
| November | 2.6 °C | 12.3 °C | 78.23 mm |
| December | -1.6 °C | 6.8 °C | 103.89 mm |
| Annual | 7.3 °C | 17.4 °C | 1202.19 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |