Newark, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.2 °C (low) to 17.5 °C (high). Annual precipitation averages 1005.3 Millimeters. Newark is located in USDA Plant Hardiness Zone 6a. 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 | -7.7 °C | 1.9 °C | 40.13 mm |
| February | -5.8 °C | 4.6 °C | 47.5 mm |
| March | -0.2 °C | 11.4 °C | 62.74 mm |
| April | 5.7 °C | 18.2 °C | 100.08 mm |
| May | 11.9 °C | 23.5 °C | 132.84 mm |
| June | 17.3 °C | 28.4 °C | 124.71 mm |
| July | 19.2 °C | 30.7 °C | 108.71 mm |
| August | 17.9 °C | 29.9 °C | 99.82 mm |
| September | 13.3 °C | 26.3 °C | 94.49 mm |
| October | 6.9 °C | 19.4 °C | 83.82 mm |
| November | 0.6 °C | 11.3 °C | 63.75 mm |
| December | -4.8 °C | 4.4 °C | 46.74 mm |
| Annual | 6.2 °C | 17.5 °C | 1005.33 mm |
| 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 6a : -23.3°C to -20.6°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 |