Whitehall, Wisconsin has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 1.3 °C (low) to 13.3 °C (high). Annual precipitation averages 898.1 Millimeters. Whitehall 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 | -14.8 °C | -3.9 °C | 26.67 mm |
| February | -12.8 °C | -1.1 °C | 26.92 mm |
| March | -6 °C | 5.8 °C | 47.5 mm |
| April | 0.7 °C | 13.7 °C | 87.88 mm |
| May | 7.4 °C | 20.8 °C | 114.3 mm |
| June | 13.2 °C | 25.8 °C | 134.37 mm |
| July | 15.3 °C | 28.1 °C | 103.12 mm |
| August | 14.2 °C | 26.9 °C | 107.7 mm |
| September | 9.6 °C | 22.8 °C | 103.63 mm |
| October | 2.8 °C | 15.2 °C | 67.56 mm |
| November | -3.6 °C | 6.3 °C | 45.21 mm |
| December | -10.4 °C | -0.9 °C | 33.27 mm |
| Annual | 1.3 °C | 13.3 °C | 898.13 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 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 | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |