Miltonsburg, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.6 °C (low) to 16 °C (high). Annual precipitation averages 1114 Millimeters. Miltonsburg is located in USDA Plant Hardiness Zone 6b. 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 | -5.9 °C | 2.3 °C | 86.11 mm |
| February | -4.8 °C | 4.2 °C | 67.82 mm |
| March | -0.9 °C | 9.3 °C | 89.66 mm |
| April | 4.7 °C | 16.3 °C | 99.57 mm |
| May | 9.7 °C | 21.3 °C | 108.97 mm |
| June | 14.7 °C | 26 °C | 121.67 mm |
| July | 17.5 °C | 28.1 °C | 108.71 mm |
| August | 15.6 °C | 27.4 °C | 94.74 mm |
| September | 12.2 °C | 24.3 °C | 92.2 mm |
| October | 6.2 °C | 17.5 °C | 78.99 mm |
| November | 1.6 °C | 10.8 °C | 80.26 mm |
| December | -2.9 °C | 4.8 °C | 85.34 mm |
| Annual | 5.6 °C | 16 °C | 1114.04 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |