Luxemburg, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2.1 °C (low) to 11.9 °C (high). Annual precipitation averages 807.2 Millimeters. Luxemburg is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -12 °C | -3.9 °C | 38.35 mm |
| February | -11.1 °C | -2.1 °C | 28.7 mm |
| March | -5.6 °C | 4.1 °C | 43.69 mm |
| April | 0.8 °C | 10.8 °C | 77.72 mm |
| May | 7.1 °C | 18.1 °C | 88.14 mm |
| June | 12.7 °C | 23.4 °C | 100.84 mm |
| July | 15.2 °C | 26.2 °C | 90.68 mm |
| August | 14.4 °C | 25.4 °C | 87.38 mm |
| September | 10.2 °C | 21.3 °C | 82.55 mm |
| October | 3.8 °C | 13.7 °C | 74.68 mm |
| November | -2.1 °C | 6.3 °C | 51.31 mm |
| December | -8.2 °C | -0.8 °C | 43.18 mm |
| Annual | 2.1 °C | 11.9 °C | 807.22 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |