Long Lake, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -1.5 °C (low) to 10.8 °C (high). Annual precipitation averages 802.1 Millimeters. Long Lake is located in USDA Plant Hardiness Zone 4b. The growing season typically runs from the last frost around Jun. 1 - Jun. 10 through the first frost around Sep.1 - Sep. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -15.9 °C | -5.6 °C | 33.78 mm |
| February | -15.5 °C | -3 °C | 29.72 mm |
| March | -10.3 °C | 3.3 °C | 40.13 mm |
| April | -3 °C | 10.6 °C | 69.34 mm |
| May | 4 °C | 18.3 °C | 89.15 mm |
| June | 9.6 °C | 23.1 °C | 105.92 mm |
| July | 11.9 °C | 25.3 °C | 91.69 mm |
| August | 10.8 °C | 24.3 °C | 82.55 mm |
| September | 6.8 °C | 19.9 °C | 92.71 mm |
| October | 0.6 °C | 12.3 °C | 80.52 mm |
| November | -5.4 °C | 3.7 °C | 46.74 mm |
| December | -12 °C | -2.8 °C | 39.88 mm |
| Annual | -1.5 °C | 10.8 °C | 802.13 mm |
| Average First Frost Date | Sep.1 - Sep. 10 |
| Average Last Frost Date | Jun. 1 - Jun. 10 |
| Average Days With Frost | Over 180 Days |
| Plant Hardiness Zone | Zone 4b : -31.7°C to -28.9°C |
| Plant Hardiness Zone - 2012 | Zone 4a : -34.4°C to -31.7°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |