State College, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.1 °C (low) to 15.2 °C (high). Annual precipitation averages 1052.8 Millimeters. State College 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. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -7.5 °C | 1.4 °C | 72.39 mm |
| February | -7 °C | 3.1 °C | 60.45 mm |
| March | -3.1 °C | 7.9 °C | 84.58 mm |
| April | 2.8 °C | 15.4 °C | 89.41 mm |
| May | 8.6 °C | 21.2 °C | 95.5 mm |
| June | 13.5 °C | 25.4 °C | 102.62 mm |
| July | 15.8 °C | 27.8 °C | 97.79 mm |
| August | 14.8 °C | 26.9 °C | 103.63 mm |
| September | 10.7 °C | 23.1 °C | 101.6 mm |
| October | 4.8 °C | 16.4 °C | 91.44 mm |
| November | -0.3 °C | 9.9 °C | 73.91 mm |
| December | -4.4 °C | 3.8 °C | 79.5 mm |
| Annual | 4.1 °C | 15.2 °C | 1052.82 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| 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 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |