Blythedale, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 40.3 °F (low) to 61 °F (high). Annual precipitation averages 39 Inches. Blythedale is located in USDA Plant Hardiness Zone 5b. 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 | 14.0 °F | 32.5 °F | 1.0 in. |
| February | 18.1 °F | 37.6 °F | 1.42 in. |
| March | 28.6 °F | 50.1 °F | 2.29 in. |
| April | 39.3 °F | 61.6 °F | 3.98 in. |
| May | 51.0 °F | 71.6 °F | 5.48 in. |
| June | 60.8 °F | 81.0 °F | 5.26 in. |
| July | 65.0 °F | 85.4 °F | 4.64 in. |
| August | 62.6 °F | 83.9 °F | 4.36 in. |
| September | 53.6 °F | 76.6 °F | 3.84 in. |
| October | 41.5 °F | 64.3 °F | 3.12 in. |
| November | 29.6 °F | 49.6 °F | 2.04 in. |
| December | 19.5 °F | 37.4 °F | 1.53 in. |
| Annual | 40.3 °F | 61 °F | 38.96 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -15°F to -10°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |