Lake of the Woods, Illinois has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.3 °C (low) to 16.5 °C (high). Annual precipitation averages 1019.6 Millimeters. Lake of the Woods is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -8.2 °C | 0.7 °C | 58.42 mm |
| February | -6.4 °C | 3.2 °C | 51.82 mm |
| March | -1.3 °C | 9.7 °C | 69.6 mm |
| April | 4.5 °C | 17.3 °C | 103.12 mm |
| May | 11.1 °C | 23.3 °C | 114.05 mm |
| June | 16.3 °C | 27.9 °C | 118.62 mm |
| July | 17.8 °C | 29.2 °C | 107.95 mm |
| August | 16.3 °C | 28.4 °C | 87.63 mm |
| September | 12.4 °C | 25.9 °C | 82.8 mm |
| October | 5.7 °C | 18.8 °C | 86.11 mm |
| November | -0.1 °C | 10.4 °C | 78.74 mm |
| December | -5.1 °C | 3.4 °C | 60.71 mm |
| Annual | 5.3 °C | 16.5 °C | 1019.57 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |