Ripon, Wisconsin has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 2.4 °C (low) to 12.6 °C (high). Annual precipitation averages 828.6 Millimeters. Ripon is located in USDA Plant Hardiness Zone 5a. 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 | -12.5 °C | -3.7 °C | 31.5 mm |
| February | -11.1 °C | -1.7 °C | 28.7 mm |
| March | -5 °C | 4.8 °C | 45.72 mm |
| April | 1.3 °C | 12.3 °C | 83.82 mm |
| May | 8.1 °C | 19.3 °C | 95.5 mm |
| June | 13.6 °C | 24.7 °C | 123.95 mm |
| July | 15.8 °C | 26.9 °C | 97.79 mm |
| August | 14.8 °C | 25.9 °C | 88.9 mm |
| September | 10.4 °C | 21.9 °C | 77.98 mm |
| October | 4 °C | 14.5 °C | 68.33 mm |
| November | -2.4 °C | 6.5 °C | 49.28 mm |
| December | -8.6 °C | -0.6 °C | 37.08 mm |
| Annual | 2.4 °C | 12.6 °C | 828.55 mm |
| 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 5a : -28.9°C to -26.1°C |
| Plant Hardiness Zone - 2012 | Zone 5a : -28.9°C to -26.1°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |