Fleming, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 42.9 °F (low) to 64.4 °F (high). Annual precipitation averages 42.2 Inches. Fleming is located in USDA Plant Hardiness Zone 6a. 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 | 18.0 °F | 37.5 °F | 1.38 in. |
| February | 22.1 °F | 42.9 °F | 1.8 in. |
| March | 31.7 °F | 54.1 °F | 2.61 in. |
| April | 41.9 °F | 65.0 °F | 4.15 in. |
| May | 52.9 °F | 74.6 °F | 5.67 in. |
| June | 62.9 °F | 83.5 °F | 5.47 in. |
| July | 66.8 °F | 87.4 °F | 4.81 in. |
| August | 64.4 °F | 86.5 °F | 4.36 in. |
| September | 55.5 °F | 78.9 °F | 4.45 in. |
| October | 43.5 °F | 67.4 °F | 3.51 in. |
| November | 32.1 °F | 53.3 °F | 2.32 in. |
| December | 22.5 °F | 41.9 °F | 1.69 in. |
| Annual | 42.9 °F | 64.4 °F | 42.22 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |