Reading, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 43.9 °F (low) to 63.1 °F (high). Annual precipitation averages 49.2 Inches. Reading is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 22.7 °F | 38.4 °F | 3.52 in. |
| February | 23.8 °F | 41.1 °F | 2.84 in. |
| March | 31.4 °F | 49.9 °F | 4.01 in. |
| April | 41.6 °F | 63.0 °F | 3.82 in. |
| May | 51.5 °F | 72.4 °F | 3.86 in. |
| June | 60.8 °F | 81.5 °F | 4.94 in. |
| July | 65.7 °F | 86.0 °F | 5.05 in. |
| August | 64.0 °F | 84.1 °F | 4.32 in. |
| September | 56.6 °F | 77.6 °F | 4.99 in. |
| October | 45.2 °F | 65.6 °F | 4.44 in. |
| November | 35.4 °F | 53.7 °F | 3.39 in. |
| December | 28.2 °F | 43.3 °F | 4.06 in. |
| Annual | 43.9 °F | 63.1 °F | 49.24 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |