Stockholm, 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 °C (high). Annual precipitation averages 895.6 Millimeters. Stockholm is located in USDA Plant Hardiness Zone 4b. 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 | -14.2 °C | -4.4 °C | 23.62 mm |
| February | -12.3 °C | -1.7 °C | 28.7 mm |
| March | -5.4 °C | 5.2 °C | 44.96 mm |
| April | 1.6 °C | 13.5 °C | 79.25 mm |
| May | 8.4 °C | 20.5 °C | 118.62 mm |
| June | 14.1 °C | 25.8 °C | 132.08 mm |
| July | 16.4 °C | 28.1 °C | 107.95 mm |
| August | 15.1 °C | 26.8 °C | 112.52 mm |
| September | 10.7 °C | 22.8 °C | 102.36 mm |
| October | 3.6 °C | 15.1 °C | 67.82 mm |
| November | -3.3 °C | 5.9 °C | 43.18 mm |
| December | -10 °C | -1.4 °C | 34.54 mm |
| Annual | 2.1 °C | 13 °C | 895.6 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 4b : -31.7°C to -28.9°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |