Austin, Pennsylvania has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2 °C (low) to 14.2 °C (high). Annual precipitation averages 1119.4 Millimeters. Austin is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.6 °C | 0 °C | 80.01 mm |
| February | -9.3 °C | 1.6 °C | 59.18 mm |
| March | -5.3 °C | 6.7 °C | 79.5 mm |
| April | 0.2 °C | 14.3 °C | 100.33 mm |
| May | 6.1 °C | 20.8 °C | 92.71 mm |
| June | 10.9 °C | 24.7 °C | 106.68 mm |
| July | 13.3 °C | 26.8 °C | 120.14 mm |
| August | 12.8 °C | 25.9 °C | 99.82 mm |
| September | 9.2 °C | 22.4 °C | 112.52 mm |
| October | 3 °C | 15.7 °C | 103.89 mm |
| November | -1.8 °C | 8.6 °C | 85.85 mm |
| December | -5.8 °C | 2.4 °C | 78.74 mm |
| Annual | 2 °C | 14.2 °C | 1119.37 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |