Augusta, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 0.8 °C (low) to 12.4 °C (high). Annual precipitation averages 846.6 Millimeters. Augusta 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 | -15.2 °C | -4.9 °C | 25.91 mm |
| February | -13.5 °C | -2.1 °C | 25.15 mm |
| March | -6.7 °C | 4.8 °C | 40.64 mm |
| April | 0.3 °C | 12.8 °C | 78.23 mm |
| May | 7.1 °C | 19.9 °C | 104.9 mm |
| June | 12.8 °C | 25.2 °C | 132.59 mm |
| July | 14.9 °C | 27.4 °C | 97.28 mm |
| August | 13.7 °C | 26.3 °C | 104.65 mm |
| September | 9 °C | 21.8 °C | 94.49 mm |
| October | 2.3 °C | 14.1 °C | 67.31 mm |
| November | -4.2 °C | 5.4 °C | 40.64 mm |
| December | -11.1 °C | -1.9 °C | 34.8 mm |
| Annual | 0.8 °C | 12.4 °C | 846.59 mm |
| 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 4b : -31.7°C to -28.9°C |
| Plant Hardiness Zone - 2012 | Zone 4b : -31.7°C to -28.9°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |