Clearfield, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2.3 °C (low) to 15.3 °C (high). Annual precipitation averages 1118.9 Millimeters. Clearfield is located in USDA Plant Hardiness Zone 6a. 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 | -9.1 °C | 1.3 °C | 81.53 mm |
| February | -8.7 °C | 2.9 °C | 65.02 mm |
| March | -4.6 °C | 8.1 °C | 80.26 mm |
| April | 0.8 °C | 15.6 °C | 96.52 mm |
| May | 6.2 °C | 21.6 °C | 105.41 mm |
| June | 11.4 °C | 25.7 °C | 127 mm |
| July | 13.9 °C | 27.9 °C | 100.08 mm |
| August | 13.3 °C | 27.2 °C | 94.49 mm |
| September | 9 °C | 23.3 °C | 103.12 mm |
| October | 2.6 °C | 16.7 °C | 91.95 mm |
| November | -2 °C | 9.7 °C | 87.63 mm |
| December | -5.7 °C | 3.8 °C | 85.85 mm |
| Annual | 2.3 °C | 15.3 °C | 1118.86 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |