Spinnerstown, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.3 °C (low) to 16.7 °C (high). Annual precipitation averages 1271 Millimeters. Spinnerstown 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 | -6.3 °C | 3.2 °C | 89.92 mm |
| February | -5.6 °C | 4.7 °C | 72.64 mm |
| March | -1.6 °C | 9.6 °C | 99.82 mm |
| April | 4.1 °C | 16.6 °C | 97.79 mm |
| May | 9.6 °C | 21.9 °C | 105.92 mm |
| June | 14.7 °C | 26.7 °C | 123.19 mm |
| July | 17.3 °C | 29.3 °C | 128.02 mm |
| August | 16.4 °C | 28.3 °C | 113.03 mm |
| September | 12.3 °C | 24.7 °C | 128.52 mm |
| October | 5.9 °C | 18 °C | 113.79 mm |
| November | 0.6 °C | 11.7 °C | 89.66 mm |
| December | -3.3 °C | 6 °C | 108.71 mm |
| Annual | 5.3 °C | 16.7 °C | 1271.01 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 |