Worth, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.9 °C (low) to 16.7 °C (high). Annual precipitation averages 978.2 Millimeters. Worth 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 | -9.7 °C | 0.8 °C | 22.86 mm |
| February | -7.2 °C | 3.8 °C | 32.77 mm |
| March | -1.4 °C | 10.7 °C | 56.9 mm |
| April | 4.3 °C | 17.2 °C | 100.33 mm |
| May | 10.9 °C | 22.8 °C | 140.46 mm |
| June | 16.4 °C | 27.8 °C | 135.38 mm |
| July | 18.7 °C | 30.4 °C | 123.7 mm |
| August | 17.4 °C | 29.4 °C | 108.46 mm |
| September | 12.2 °C | 25.4 °C | 95 mm |
| October | 5.4 °C | 18.7 °C | 76.45 mm |
| November | -1.1 °C | 10.3 °C | 50.04 mm |
| December | -6.7 °C | 3.4 °C | 35.81 mm |
| Annual | 4.9 °C | 16.7 °C | 978.16 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 |