Oak Ridge, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 46.5 °F (low) to 67.3 °F (high). Annual precipitation averages 48.3 Inches. Oak Ridge is located in USDA Plant Hardiness Zone 7a. 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 | 24.5 °F | 41.8 °F | 3.24 in. |
| February | 27.4 °F | 47.3 °F | 3.26 in. |
| March | 35.7 °F | 56.9 °F | 4.48 in. |
| April | 45.9 °F | 68.3 °F | 5.31 in. |
| May | 56.0 °F | 77.1 °F | 5.49 in. |
| June | 64.7 °F | 85.8 °F | 4.16 in. |
| July | 68.4 °F | 88.6 °F | 4.06 in. |
| August | 65.8 °F | 87.7 °F | 3.21 in. |
| September | 58.1 °F | 81.6 °F | 3.37 in. |
| October | 46.7 °F | 70.3 °F | 3.61 in. |
| November | 36.7 °F | 56.7 °F | 4.48 in. |
| December | 28.1 °F | 45.3 °F | 3.65 in. |
| Annual | 46.5 °F | 67.3 °F | 48.32 in. |
| 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 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |