Pomona, Missouri has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 45.5 °F (low) to 67 °F (high). Annual precipitation averages 47.1 Inches. Pomona 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 | 23.8 °F | 43.4 °F | 2.85 in. |
| February | 27.2 °F | 48.1 °F | 2.94 in. |
| March | 34.9 °F | 57.5 °F | 4.57 in. |
| April | 45.0 °F | 68.0 °F | 5.45 in. |
| May | 54.3 °F | 75.6 °F | 5.31 in. |
| June | 62.9 °F | 83.5 °F | 3.77 in. |
| July | 66.8 °F | 88.0 °F | 4.05 in. |
| August | 65.2 °F | 87.5 °F | 3.51 in. |
| September | 57.3 °F | 80.5 °F | 3.63 in. |
| October | 45.7 °F | 69.3 °F | 3.66 in. |
| November | 35.7 °F | 56.8 °F | 4.17 in. |
| December | 27.1 °F | 46.0 °F | 3.22 in. |
| Annual | 45.5 °F | 67 °F | 47.13 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 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 | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |