Eau Claire, Wisconsin has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 1.9 °C (low) to 12.9 °C (high). Annual precipitation averages 832.4 Millimeters. Eau Claire 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 | -14.2 °C | -4.5 °C | 26.67 mm |
| February | -12.3 °C | -1.8 °C | 27.69 mm |
| March | -5.7 °C | 5.1 °C | 48.51 mm |
| April | 1.4 °C | 13.4 °C | 77.47 mm |
| May | 8.2 °C | 20.6 °C | 101.85 mm |
| June | 14 °C | 25.8 °C | 117.35 mm |
| July | 16.2 °C | 28.1 °C | 93.98 mm |
| August | 15 °C | 26.9 °C | 100.84 mm |
| September | 10.3 °C | 22.7 °C | 92.46 mm |
| October | 3.5 °C | 14.8 °C | 67.31 mm |
| November | -3.3 °C | 5.8 °C | 43.69 mm |
| December | -10.1 °C | -1.6 °C | 34.54 mm |
| Annual | 1.9 °C | 12.9 °C | 832.36 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 | Dfa - Humid Continental Hot Summers With Year Around Precipitation |