Bloomsdale, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 45.4 °F (low) to 67 °F (high). Annual precipitation averages 43.3 Inches. Bloomsdale 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 23.0 °F | 41.2 °F | 2.55 in. |
| February | 26.4 °F | 46.4 °F | 2.55 in. |
| March | 34.4 °F | 56.3 °F | 3.69 in. |
| April | 44.4 °F | 68.0 °F | 4.98 in. |
| May | 55.2 °F | 77.1 °F | 5.17 in. |
| June | 64.1 °F | 85.8 °F | 3.99 in. |
| July | 67.8 °F | 88.9 °F | 3.98 in. |
| August | 65.4 °F | 88.0 °F | 3.25 in. |
| September | 57.0 °F | 81.4 °F | 3.29 in. |
| October | 45.4 °F | 70.3 °F | 3.22 in. |
| November | 35.3 °F | 56.2 °F | 3.75 in. |
| December | 26.9 °F | 44.7 °F | 2.9 in. |
| Annual | 45.4 °F | 67 °F | 43.32 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |