Eastman, 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 13 °C (high). Annual precipitation averages 962.4 Millimeters. Eastman 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 | -12.8 °C | -3.8 °C | 32.51 mm |
| February | -11 °C | -1.2 °C | 30.73 mm |
| March | -4.4 °C | 5.8 °C | 51.56 mm |
| April | 2.1 °C | 13.4 °C | 101.85 mm |
| May | 8.6 °C | 19.9 °C | 119.13 mm |
| June | 14.4 °C | 25.2 °C | 147.83 mm |
| July | 16.6 °C | 27.2 °C | 114.05 mm |
| August | 15.5 °C | 26.2 °C | 105.16 mm |
| September | 10.7 °C | 22.3 °C | 97.28 mm |
| October | 4.1 °C | 15.2 °C | 70.61 mm |
| November | -2.8 °C | 6.5 °C | 52.58 mm |
| December | -9.1 °C | -0.6 °C | 39.12 mm |
| Annual | 2.7 °C | 13 °C | 962.41 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 | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |