Waupun, Wisconsin has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 36.8 °F (low) to 55.4 °F (high). Annual precipitation averages 34.1 Inches. Waupun is located in USDA Plant Hardiness Zone 5a. 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 | 10.1 °F | 25.8 °F | 1.36 in. |
| February | 12.5 °F | 29.4 °F | 1.28 in. |
| March | 23.5 °F | 41.5 °F | 1.84 in. |
| April | 35.3 °F | 55.1 °F | 3.45 in. |
| May | 47.0 °F | 67.5 °F | 3.88 in. |
| June | 57.0 °F | 77.1 °F | 4.89 in. |
| July | 61.1 °F | 81.1 °F | 4.01 in. |
| August | 59.1 °F | 79.1 °F | 3.71 in. |
| September | 51.3 °F | 72.6 °F | 3.23 in. |
| October | 39.5 °F | 59.1 °F | 2.86 in. |
| November | 28.2 °F | 44.5 °F | 1.99 in. |
| December | 17.0 °F | 31.4 °F | 1.58 in. |
| Annual | 36.8 °F | 55.4 °F | 34.08 in. |
| 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 5a : -20°F to -15°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 |