Fredericksburg, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.7 °C (low) to 15.5 °C (high). Annual precipitation averages 1044.5 Millimeters. Fredericksburg is located in USDA Plant Hardiness Zone 6a. 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 | -7.3 °C | 1.3 °C | 73.66 mm |
| February | -6.7 °C | 2.9 °C | 56.64 mm |
| March | -2.3 °C | 8.3 °C | 79.76 mm |
| April | 3.6 °C | 15.7 °C | 97.54 mm |
| May | 9.5 °C | 21.4 °C | 106.43 mm |
| June | 14.6 °C | 26.3 °C | 120.65 mm |
| July | 16.5 °C | 27.9 °C | 103.12 mm |
| August | 15.6 °C | 27.2 °C | 93.22 mm |
| September | 11.5 °C | 23.9 °C | 84.58 mm |
| October | 5.3 °C | 17.1 °C | 81.79 mm |
| November | 0.2 °C | 10.2 °C | 73.91 mm |
| December | -4.1 °C | 3.9 °C | 73.15 mm |
| Annual | 4.7 °C | 15.5 °C | 1044.45 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°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 |