Ogema, Wisconsin has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from -1.1 °C (low) to 10.6 °C (high). Annual precipitation averages 814.3 Millimeters. Ogema is located in USDA Plant Hardiness Zone 4a. The growing season typically runs from the last frost around May 11 - May 20 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -17.2 °C | -6.2 °C | 27.18 mm |
| February | -16 °C | -3.6 °C | 25.15 mm |
| March | -9.4 °C | 3 °C | 38.86 mm |
| April | -1.9 °C | 10.6 °C | 69.09 mm |
| May | 5.2 °C | 18.2 °C | 95 mm |
| June | 10.8 °C | 23.2 °C | 110.74 mm |
| July | 12.9 °C | 25.3 °C | 99.06 mm |
| August | 11.8 °C | 24.3 °C | 97.03 mm |
| September | 7.5 °C | 19.9 °C | 93.73 mm |
| October | 0.8 °C | 12.2 °C | 78.23 mm |
| November | -5.4 °C | 3.6 °C | 45.47 mm |
| December | -12.6 °C | -3.3 °C | 34.8 mm |
| Annual | -1.1 °C | 10.6 °C | 814.34 mm |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 11 - May 20 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 4a : -34.4°C to -31.7°C |
| Plant Hardiness Zone - 2012 | Zone 3b : -37.2°C to -34.4°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |