Madison, Pennsylvania has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 40.9 °F (low) to 61.3 °F (high). Annual precipitation averages 42.6 Inches. Madison 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 | 20.4 °F | 37.1 °F | 3.15 in. |
| February | 21.2 °F | 39.7 °F | 2.79 in. |
| March | 28.5 °F | 48.9 °F | 3.3 in. |
| April | 38.5 °F | 61.8 °F | 3.51 in. |
| May | 49.0 °F | 71.4 °F | 4.09 in. |
| June | 57.7 °F | 79.3 °F | 4.3 in. |
| July | 62.0 °F | 83.0 °F | 4.4 in. |
| August | 60.3 °F | 82.2 °F | 3.82 in. |
| September | 53.1 °F | 75.9 °F | 3.73 in. |
| October | 41.9 °F | 63.8 °F | 3.22 in. |
| November | 32.3 °F | 51.6 °F | 3.13 in. |
| December | 25.7 °F | 41.3 °F | 3.15 in. |
| Annual | 40.9 °F | 61.3 °F | 42.59 in. |
| 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 : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |