Oakland City, Indiana has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 7.5 °C (low) to 19 °C (high). Annual precipitation averages 1253.5 Millimeters. Oakland City 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 | -4.8 °C | 4.5 °C | 90.93 mm |
| February | -3.3 °C | 7.2 °C | 77.22 mm |
| March | 1.3 °C | 12.8 °C | 108.97 mm |
| April | 7.1 °C | 19.7 °C | 134.37 mm |
| May | 13 °C | 24.8 °C | 140.72 mm |
| June | 17.8 °C | 29.3 °C | 123.19 mm |
| July | 19.5 °C | 30.9 °C | 110.74 mm |
| August | 18.3 °C | 30.4 °C | 78.49 mm |
| September | 14.1 °C | 27.3 °C | 96.52 mm |
| October | 7.6 °C | 20.9 °C | 90.17 mm |
| November | 1.9 °C | 13.1 °C | 105.16 mm |
| December | -2.4 °C | 6.9 °C | 97.03 mm |
| Annual | 7.5 °C | 19 °C | 1253.51 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 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |