Claysburg, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.4 °C (low) to 15.9 °C (high). Annual precipitation averages 1049.5 Millimeters. Claysburg is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6.9 °C | 2.2 °C | 73.41 mm |
| February | -6.3 °C | 3.9 °C | 62.48 mm |
| March | -2.7 °C | 8.7 °C | 86.87 mm |
| April | 3.2 °C | 16.1 °C | 91.95 mm |
| May | 8.8 °C | 21.5 °C | 102.87 mm |
| June | 13.7 °C | 25.9 °C | 100.33 mm |
| July | 16.1 °C | 28.4 °C | 93.22 mm |
| August | 15.1 °C | 27.6 °C | 90.42 mm |
| September | 11.3 °C | 23.8 °C | 100.33 mm |
| October | 5 °C | 17.3 °C | 86.11 mm |
| November | -0.3 °C | 10.5 °C | 79.25 mm |
| December | -4.2 °C | 4.6 °C | 82.3 mm |
| Annual | 4.4 °C | 15.9 °C | 1049.54 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |