New Brighton, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 41.8 °F (low) to 61.4 °F (high). Annual precipitation averages 39.9 Inches. New Brighton is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 21.1 °F | 36.6 °F | 3.06 in. |
| February | 22.0 °F | 39.3 °F | 2.26 in. |
| March | 29.3 °F | 48.6 °F | 3.06 in. |
| April | 39.0 °F | 62.1 °F | 3.71 in. |
| May | 49.4 °F | 71.9 °F | 3.76 in. |
| June | 58.2 °F | 79.9 °F | 4.23 in. |
| July | 62.5 °F | 83.8 °F | 3.9 in. |
| August | 61.1 °F | 82.5 °F | 3.45 in. |
| September | 54.5 °F | 76.2 °F | 3.48 in. |
| October | 43.7 °F | 64.0 °F | 3.07 in. |
| November | 33.9 °F | 51.5 °F | 2.9 in. |
| December | 26.5 °F | 40.9 °F | 3.06 in. |
| Annual | 41.8 °F | 61.4 °F | 39.94 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |