Parkway, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 44.6 °F (low) to 66.8 °F (high). Annual precipitation averages 44.9 Inches. Parkway is located in USDA Plant Hardiness Zone 6b. 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 | 21.5 °F | 40.9 °F | 2.59 in. |
| February | 24.9 °F | 46.2 °F | 2.41 in. |
| March | 33.3 °F | 56.3 °F | 3.69 in. |
| April | 43.8 °F | 68.5 °F | 4.87 in. |
| May | 54.1 °F | 76.6 °F | 5.53 in. |
| June | 63.0 °F | 84.7 °F | 4.24 in. |
| July | 67.2 °F | 88.7 °F | 4.37 in. |
| August | 65.1 °F | 87.8 °F | 3.8 in. |
| September | 56.8 °F | 81.0 °F | 3.69 in. |
| October | 44.7 °F | 69.6 °F | 3.4 in. |
| November | 34.4 °F | 56.1 °F | 3.44 in. |
| December | 26.0 °F | 44.9 °F | 2.82 in. |
| Annual | 44.6 °F | 66.8 °F | 44.85 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 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 |