Whitehall, Wisconsin has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 34.3 °F (low) to 55.9 °F (high). Annual precipitation averages 35.4 Inches. 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 | 5.4 °F | 25.0 °F | 1.05 in. |
| February | 9.0 °F | 30.0 °F | 1.06 in. |
| March | 21.2 °F | 42.5 °F | 1.87 in. |
| April | 33.2 °F | 56.7 °F | 3.46 in. |
| May | 45.4 °F | 69.4 °F | 4.5 in. |
| June | 55.8 °F | 78.5 °F | 5.29 in. |
| July | 59.6 °F | 82.5 °F | 4.06 in. |
| August | 57.5 °F | 80.5 °F | 4.24 in. |
| September | 49.2 °F | 73.0 °F | 4.08 in. |
| October | 37.1 °F | 59.4 °F | 2.66 in. |
| November | 25.5 °F | 43.4 °F | 1.78 in. |
| December | 13.2 °F | 30.3 °F | 1.31 in. |
| Annual | 34.3 °F | 55.9 °F | 35.36 in. |
| 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 : -25°F to -20°F |
| Plant Hardiness Zone - 2012 | Zone 4b : -25°F to -20°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |