Jackson, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 8.1 °C (low) to 19.9 °C (high). Annual precipitation averages 1263.4 Millimeters. Jackson is located in USDA Plant Hardiness Zone 7a. 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 | -4.1 °C | 5.7 °C | 87.12 mm |
| February | -2.2 °C | 8.7 °C | 90.42 mm |
| March | 2.4 °C | 14.2 °C | 122.94 mm |
| April | 7.8 °C | 20.5 °C | 135.13 mm |
| May | 13.4 °C | 25.4 °C | 140.21 mm |
| June | 18.3 °C | 30.3 °C | 101.85 mm |
| July | 20.3 °C | 31.9 °C | 105.92 mm |
| August | 18.9 °C | 31.3 °C | 82.3 mm |
| September | 14.4 °C | 27.8 °C | 88.9 mm |
| October | 7.9 °C | 21.6 °C | 93.73 mm |
| November | 2.4 °C | 13.9 °C | 117.35 mm |
| December | -2.1 °C | 7.6 °C | 97.54 mm |
| Annual | 8.1 °C | 19.9 °C | 1263.41 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |