Hudson, Massachusetts has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 3.6 °C (low) to 15.5 °C (high). Annual precipitation averages 1247.4 Millimeters. Hudson 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -9.1 °C | 1.7 °C | 95.25 mm |
| February | -8.1 °C | 3.3 °C | 85.6 mm |
| March | -3.7 °C | 7.5 °C | 113.79 mm |
| April | 2.1 °C | 14.7 °C | 108.97 mm |
| May | 7.8 °C | 20.5 °C | 93.47 mm |
| June | 13.1 °C | 25.2 °C | 110.49 mm |
| July | 16.2 °C | 28.6 °C | 96.01 mm |
| August | 15.4 °C | 27.7 °C | 102.11 mm |
| September | 10.7 °C | 23.9 °C | 100.84 mm |
| October | 4.5 °C | 17.1 °C | 124.21 mm |
| November | -0.8 °C | 10.8 °C | 98.04 mm |
| December | -5.4 °C | 4.9 °C | 118.62 mm |
| Annual | 3.6 °C | 15.5 °C | 1247.4 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |