Milford Square, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.4 °C (low) to 16.8 °C (high). Annual precipitation averages 1276.1 Millimeters. Milford Square is located in USDA Plant Hardiness Zone 7a. 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 | -6.2 °C | 3.3 °C | 91.19 mm |
| February | -5.6 °C | 4.8 °C | 75.44 mm |
| March | -1.6 °C | 9.6 °C | 103.89 mm |
| April | 4.2 °C | 16.6 °C | 99.82 mm |
| May | 9.6 °C | 21.9 °C | 107.44 mm |
| June | 14.7 °C | 26.8 °C | 124.71 mm |
| July | 17.4 °C | 29.4 °C | 125.73 mm |
| August | 16.5 °C | 28.4 °C | 111 mm |
| September | 12.5 °C | 24.7 °C | 125.22 mm |
| October | 6.1 °C | 18 °C | 111.76 mm |
| November | 0.6 °C | 11.7 °C | 88.39 mm |
| December | -3.2 °C | 6 °C | 111.51 mm |
| Annual | 5.4 °C | 16.8 °C | 1276.1 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |