Oakfield, Wisconsin has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 2.7 °C (low) to 12.9 °C (high). Annual precipitation averages 831.1 Millimeters. Oakfield 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -12.1 °C | -3.5 °C | 33.02 mm |
| February | -10.8 °C | -1.5 °C | 29.46 mm |
| March | -4.7 °C | 5.1 °C | 44.45 mm |
| April | 1.8 °C | 12.7 °C | 84.58 mm |
| May | 8.4 °C | 19.6 °C | 93.73 mm |
| June | 13.9 °C | 24.9 °C | 118.87 mm |
| July | 16.2 °C | 27.2 °C | 97.03 mm |
| August | 15.2 °C | 26.1 °C | 92.46 mm |
| September | 10.8 °C | 22.4 °C | 78.49 mm |
| October | 4.3 °C | 14.9 °C | 72.39 mm |
| November | -2.1 °C | 6.9 °C | 48.77 mm |
| December | -8.2 °C | -0.4 °C | 37.85 mm |
| Annual | 2.7 °C | 12.9 °C | 831.1 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| 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 |