Burnham, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 41 °F (low) to 61.7 °F (high). Annual precipitation averages 43 Inches. Burnham is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 20.3 °F | 36.5 °F | 2.94 in. |
| February | 21.5 °F | 39.7 °F | 2.3 in. |
| March | 28.3 °F | 48.7 °F | 3.49 in. |
| April | 38.4 °F | 62.0 °F | 3.67 in. |
| May | 48.6 °F | 72.1 °F | 4.15 in. |
| June | 57.9 °F | 80.2 °F | 4.02 in. |
| July | 62.1 °F | 84.7 °F | 3.78 in. |
| August | 60.7 °F | 83.0 °F | 3.87 in. |
| September | 53.5 °F | 76.0 °F | 4.45 in. |
| October | 42.1 °F | 64.1 °F | 3.9 in. |
| November | 32.7 °F | 52.2 °F | 3.09 in. |
| December | 25.6 °F | 40.9 °F | 3.32 in. |
| Annual | 41 °F | 61.7 °F | 42.98 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| 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 | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |