High Ridge, Missouri has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 46.9 °F (low) to 66.8 °F (high). Annual precipitation averages 44.4 Inches. High Ridge is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 24.4 °F | 42.5 °F | 2.8 in. |
| February | 27.8 °F | 46.8 °F | 2.45 in. |
| March | 35.7 °F | 57.1 °F | 3.72 in. |
| April | 45.7 °F | 67.9 °F | 4.85 in. |
| May | 56.0 °F | 76.7 °F | 5.29 in. |
| June | 64.4 °F | 84.8 °F | 4.52 in. |
| July | 68.6 °F | 88.4 °F | 4.06 in. |
| August | 66.2 °F | 87.0 °F | 3.62 in. |
| September | 59.7 °F | 81.0 °F | 3.45 in. |
| October | 47.5 °F | 69.3 °F | 3.32 in. |
| November | 37.6 °F | 55.1 °F | 3.59 in. |
| December | 29.5 °F | 45.2 °F | 2.77 in. |
| Annual | 46.9 °F | 66.8 °F | 44.44 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : 0°F to 5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |