Big Spring, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.9 °C (low) to 18.8 °C (high). Annual precipitation averages 1093.5 Millimeters. Big Spring is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6 °C | 4.1 °C | 58.93 mm |
| February | -4.3 °C | 7 °C | 57.4 mm |
| March | 0.7 °C | 12.9 °C | 77.72 mm |
| April | 6.4 °C | 19.6 °C | 118.36 mm |
| May | 12.3 °C | 24.3 °C | 129.54 mm |
| June | 17.3 °C | 28.9 °C | 116.08 mm |
| July | 19.7 °C | 31.1 °C | 105.92 mm |
| August | 18.4 °C | 30.6 °C | 96.27 mm |
| September | 13.6 °C | 26.9 °C | 97.79 mm |
| October | 7 °C | 20.4 °C | 86.87 mm |
| November | 1 °C | 13 °C | 84.58 mm |
| December | -3.8 °C | 6.4 °C | 64.01 mm |
| Annual | 6.9 °C | 18.8 °C | 1093.47 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |