Fredericksburg, Indiana has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.7 °C (low) to 19 °C (high). Annual precipitation averages 1254.5 Millimeters. Fredericksburg is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.2 °C | 5.1 °C | 93.73 mm |
| February | -3.7 °C | 7.8 °C | 85.34 mm |
| March | 0.5 °C | 13.2 °C | 114.3 mm |
| April | 6 °C | 19.8 °C | 133.86 mm |
| May | 11.7 °C | 24.6 °C | 135.38 mm |
| June | 16.6 °C | 28.7 °C | 118.87 mm |
| July | 18.3 °C | 30.4 °C | 106.17 mm |
| August | 17.4 °C | 30.1 °C | 82.3 mm |
| September | 13.2 °C | 26.9 °C | 94.74 mm |
| October | 6.6 °C | 20.7 °C | 89.41 mm |
| November | 1.2 °C | 13.4 °C | 96.52 mm |
| December | -2.7 °C | 7.2 °C | 103.89 mm |
| Annual | 6.7 °C | 19 °C | 1254.51 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 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 |