Marquette, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 2.1 °C (low) to 13.5 °C (high). Annual precipitation averages 894.1 Millimeters. Marquette is located in USDA Plant Hardiness Zone 5a. 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 | -12.8 °C | -3.1 °C | 35.31 mm |
| February | -11.4 °C | -0.8 °C | 32.77 mm |
| March | -5.3 °C | 5.9 °C | 48.01 mm |
| April | 1.2 °C | 13.5 °C | 90.42 mm |
| May | 8.1 °C | 20.6 °C | 106.17 mm |
| June | 13.6 °C | 25.8 °C | 129.29 mm |
| July | 15.8 °C | 27.8 °C | 105.16 mm |
| August | 14.6 °C | 26.9 °C | 93.73 mm |
| September | 9.8 °C | 22.8 °C | 85.34 mm |
| October | 3.4 °C | 15.4 °C | 72.9 mm |
| November | -2.8 °C | 7 °C | 52.32 mm |
| December | -8.9 °C | -0.1 °C | 42.67 mm |
| Annual | 2.1 °C | 13.5 °C | 894.09 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 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |