Rich Hill, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 45.2 °F (low) to 67 °F (high). Annual precipitation averages 44.3 Inches. Rich Hill 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 | 21.3 °F | 41.4 °F | 1.56 in. |
| February | 25.0 °F | 46.7 °F | 2.08 in. |
| March | 34.2 °F | 57.0 °F | 2.98 in. |
| April | 44.0 °F | 67.2 °F | 4.67 in. |
| May | 54.7 °F | 75.9 °F | 6.32 in. |
| June | 64.4 °F | 84.7 °F | 5.69 in. |
| July | 68.5 °F | 89.6 °F | 4.39 in. |
| August | 66.3 °F | 88.6 °F | 3.76 in. |
| September | 57.5 °F | 81.1 °F | 4.34 in. |
| October | 45.6 °F | 69.8 °F | 3.41 in. |
| November | 34.7 °F | 56.4 °F | 2.95 in. |
| December | 25.6 °F | 45.2 °F | 2.17 in. |
| Annual | 45.2 °F | 67 °F | 44.32 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 6b : -5°F to 0°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 |