Pacific, Missouri has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 45.6 °F (low) to 66.4 °F (high). Annual precipitation averages 43.7 Inches. Pacific 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 | 22.1 °F | 40.0 °F | 2.79 in. |
| February | 25.7 °F | 45.6 °F | 2.32 in. |
| March | 34.4 °F | 55.8 °F | 3.74 in. |
| April | 44.9 °F | 67.7 °F | 4.73 in. |
| May | 55.5 °F | 76.4 °F | 5.05 in. |
| June | 64.5 °F | 84.8 °F | 4.39 in. |
| July | 68.7 °F | 88.7 °F | 3.94 in. |
| August | 66.3 °F | 87.4 °F | 3.74 in. |
| September | 58.1 °F | 80.9 °F | 3.52 in. |
| October | 45.7 °F | 69.2 °F | 3.36 in. |
| November | 35.2 °F | 55.6 °F | 3.49 in. |
| December | 26.6 °F | 44.4 °F | 2.61 in. |
| Annual | 45.6 °F | 66.4 °F | 43.68 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 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |