Random Lake, Wisconsin has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 2.7 °C (low) to 12.7 °C (high). Annual precipitation averages 866.7 Millimeters. Random Lake 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 | -11.1 °C | -2.9 °C | 42.93 mm |
| February | -9.8 °C | -0.9 °C | 40.39 mm |
| March | -4.6 °C | 5.1 °C | 51.82 mm |
| April | 1.3 °C | 11.8 °C | 95.25 mm |
| May | 7.3 °C | 18.4 °C | 99.57 mm |
| June | 12.8 °C | 24.2 °C | 99.06 mm |
| July | 15.7 °C | 26.9 °C | 95.76 mm |
| August | 14.9 °C | 25.9 °C | 91.19 mm |
| September | 10.5 °C | 22.1 °C | 75.44 mm |
| October | 4.3 °C | 14.8 °C | 72.9 mm |
| November | -1.8 °C | 7 °C | 52.83 mm |
| December | -7.4 °C | 0.3 °C | 49.53 mm |
| Annual | 2.7 °C | 12.7 °C | 866.67 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 | Dfa - Humid Continental Hot Summers With Year Around Precipitation |