Conception, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.1 °C (low) to 16.7 °C (high). Annual precipitation averages 969.3 Millimeters. Conception 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 | -9.6 °C | 0.9 °C | 23.11 mm |
| February | -7.1 °C | 3.9 °C | 33.02 mm |
| March | -1.4 °C | 10.8 °C | 59.18 mm |
| April | 4.4 °C | 17 °C | 100.33 mm |
| May | 10.9 °C | 22.6 °C | 132.59 mm |
| June | 16.4 °C | 27.7 °C | 133.35 mm |
| July | 18.9 °C | 30.1 °C | 128.78 mm |
| August | 17.6 °C | 29.3 °C | 104.14 mm |
| September | 12.6 °C | 25.3 °C | 95.25 mm |
| October | 5.8 °C | 18.6 °C | 75.44 mm |
| November | -0.7 °C | 10.6 °C | 47.75 mm |
| December | -6.3 °C | 3.4 °C | 36.32 mm |
| Annual | 5.1 °C | 16.7 °C | 969.26 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 |