Dawn, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6 °C (low) to 17.7 °C (high). Annual precipitation averages 1035.1 Millimeters. Dawn is located in USDA Plant Hardiness Zone 6a. 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 | -8.3 °C | 2.1 °C | 32.26 mm |
| February | -6 °C | 5.1 °C | 44.45 mm |
| March | -0.4 °C | 11.7 °C | 68.33 mm |
| April | 5.6 °C | 18 °C | 98.81 mm |
| May | 11.8 °C | 23.4 °C | 138.18 mm |
| June | 17.4 °C | 28.7 °C | 132.08 mm |
| July | 19.6 °C | 30.9 °C | 117.35 mm |
| August | 18.1 °C | 30.1 °C | 111.25 mm |
| September | 13.1 °C | 26.2 °C | 110.24 mm |
| October | 6.4 °C | 19.4 °C | 81.79 mm |
| November | 0.1 °C | 11.6 °C | 58.17 mm |
| December | -5.4 °C | 4.6 °C | 42.16 mm |
| Annual | 6 °C | 17.7 °C | 1035.07 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| 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 |