Knob Noster, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 44.3 °F (low) to 64.7 °F (high). Annual precipitation averages 42.2 Inches. Knob Noster 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 | 19.6 °F | 38.5 °F | 1.54 in. |
| February | 24.0 °F | 44.0 °F | 1.89 in. |
| March | 33.1 °F | 54.5 °F | 2.75 in. |
| April | 43.1 °F | 64.6 °F | 4.49 in. |
| May | 54.4 °F | 74.2 °F | 5.34 in. |
| June | 64.0 °F | 83.2 °F | 5.24 in. |
| July | 67.9 °F | 87.3 °F | 4.66 in. |
| August | 65.7 °F | 86.3 °F | 3.92 in. |
| September | 56.9 °F | 78.9 °F | 4.2 in. |
| October | 44.8 °F | 67.8 °F | 3.43 in. |
| November | 33.7 °F | 54.1 °F | 2.72 in. |
| December | 24.6 °F | 42.7 °F | 2.0 in. |
| Annual | 44.3 °F | 64.7 °F | 42.18 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 | Dfa - Humid Continental Hot Summers With Year Around Precipitation |