Metamora, Indiana has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.1 °C (low) to 17.8 °C (high). Annual precipitation averages 1130.1 Millimeters. Metamora is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6.1 °C | 3.2 °C | 84.07 mm |
| February | -4.8 °C | 5.4 °C | 68.58 mm |
| March | -0.3 °C | 11.2 °C | 94.23 mm |
| April | 5.4 °C | 18.4 °C | 116.84 mm |
| May | 11.3 °C | 23.7 °C | 124.21 mm |
| June | 16.2 °C | 28.3 °C | 120.65 mm |
| July | 18 °C | 29.9 °C | 106.17 mm |
| August | 17.1 °C | 29.4 °C | 80.52 mm |
| September | 12.7 °C | 26.3 °C | 77.98 mm |
| October | 6.1 °C | 19.7 °C | 82.3 mm |
| November | 0.7 °C | 12.1 °C | 86.11 mm |
| December | -3.2 °C | 5.7 °C | 88.39 mm |
| Annual | 6.1 °C | 17.8 °C | 1130.05 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| 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 |