Blythedale, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.6 °C (low) to 16.1 °C (high). Annual precipitation averages 989.6 Millimeters. 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 | -10 °C | 0.3 °C | 25.4 mm |
| February | -7.7 °C | 3.1 °C | 36.07 mm |
| March | -1.9 °C | 10.1 °C | 58.17 mm |
| April | 4.1 °C | 16.4 °C | 101.09 mm |
| May | 10.6 °C | 22 °C | 139.19 mm |
| June | 16 °C | 27.2 °C | 133.6 mm |
| July | 18.3 °C | 29.7 °C | 117.86 mm |
| August | 17 °C | 28.8 °C | 110.74 mm |
| September | 12 °C | 24.8 °C | 97.54 mm |
| October | 5.3 °C | 17.9 °C | 79.25 mm |
| November | -1.3 °C | 9.8 °C | 51.82 mm |
| December | -6.9 °C | 3 °C | 38.86 mm |
| Annual | 4.6 °C | 16.1 °C | 989.59 mm |
| 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 : -26.1°C to -23.3°C |
| Plant Hardiness Zone - 2012 | Zone 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |