Grayridge, Missouri has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 48.9 °F (low) to 68.5 °F (high). Annual precipitation averages 50.4 Inches. Grayridge is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 27.4 °F | 43.3 °F | 3.64 in. |
| February | 30.3 °F | 48.2 °F | 3.75 in. |
| March | 38.3 °F | 58.0 °F | 4.64 in. |
| April | 48.3 °F | 69.4 °F | 5.43 in. |
| May | 58.9 °F | 78.5 °F | 5.35 in. |
| June | 67.3 °F | 87.0 °F | 3.76 in. |
| July | 70.6 °F | 89.5 °F | 4.15 in. |
| August | 68.4 °F | 88.7 °F | 3.19 in. |
| September | 60.5 °F | 82.8 °F | 3.59 in. |
| October | 48.4 °F | 71.7 °F | 4.0 in. |
| November | 38.1 °F | 57.7 °F | 4.47 in. |
| December | 30.5 °F | 46.6 °F | 4.47 in. |
| Annual | 48.9 °F | 68.5 °F | 50.44 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 7b : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |