Holt, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.9 °C (low) to 17.8 °C (high). Annual precipitation averages 1038.4 Millimeters. Holt 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. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -8 °C | 2.9 °C | 30.23 mm |
| February | -5.8 °C | 5.9 °C | 42.16 mm |
| March | -0.3 °C | 12.3 °C | 60.71 mm |
| April | 5.2 °C | 17.9 °C | 96.01 mm |
| May | 11.6 °C | 23.3 °C | 147.07 mm |
| June | 17 °C | 28.4 °C | 127 mm |
| July | 19.4 °C | 30.8 °C | 130.81 mm |
| August | 18.1 °C | 30.2 °C | 105.92 mm |
| September | 13 °C | 25.9 °C | 116.08 mm |
| October | 6.3 °C | 19.4 °C | 86.87 mm |
| November | -0.1 °C | 11.7 °C | 52.58 mm |
| December | -5.3 °C | 5.2 °C | 42.93 mm |
| Annual | 5.9 °C | 17.8 °C | 1038.37 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 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 |