Malden, Massachusetts has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.8 °C (low) to 15.3 °C (high). Annual precipitation averages 1289.3 Millimeters. Malden is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6.4 °C | 2.7 °C | 104.65 mm |
| February | -5.6 °C | 4 °C | 95.76 mm |
| March | -1.6 °C | 7.4 °C | 126.24 mm |
| April | 4.1 °C | 13.8 °C | 111.76 mm |
| May | 9.5 °C | 19.4 °C | 93.73 mm |
| June | 14.8 °C | 24.7 °C | 108.2 mm |
| July | 18.1 °C | 27.9 °C | 96.77 mm |
| August | 17.4 °C | 27.1 °C | 95.25 mm |
| September | 13.3 °C | 23.2 °C | 99.31 mm |
| October | 7.1 °C | 16.9 °C | 125.73 mm |
| November | 1.8 °C | 11.1 °C | 105.92 mm |
| December | -2.9 °C | 5.7 °C | 125.98 mm |
| Annual | 5.8 °C | 15.3 °C | 1289.3 mm |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |