Fond du Lac, Wisconsin has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 37.8 °F (low) to 55.2 °F (high). Annual precipitation averages 31.5 Inches. Fond du Lac is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 11.3 °F | 26.2 °F | 1.24 in. |
| February | 13.6 °F | 29.6 °F | 1.07 in. |
| March | 24.0 °F | 41.1 °F | 1.67 in. |
| April | 36.0 °F | 54.6 °F | 3.17 in. |
| May | 47.8 °F | 67.0 °F | 3.53 in. |
| June | 57.9 °F | 76.6 °F | 4.54 in. |
| July | 62.1 °F | 81.1 °F | 3.69 in. |
| August | 60.4 °F | 78.9 °F | 3.58 in. |
| September | 52.5 °F | 72.2 °F | 2.99 in. |
| October | 40.6 °F | 58.7 °F | 2.83 in. |
| November | 29.2 °F | 44.4 °F | 1.8 in. |
| December | 18.2 °F | 31.8 °F | 1.39 in. |
| Annual | 37.8 °F | 55.2 °F | 31.5 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5a : -20°F to -15°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |