Bolivar, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 7.4 °C (low) to 19.5 °C (high). Annual precipitation averages 1178.1 Millimeters. Bolivar is located in USDA Plant Hardiness Zone 6b. 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 | -5.4 °C | 5.8 °C | 57.15 mm |
| February | -3.4 °C | 8.7 °C | 57.66 mm |
| March | 1.4 °C | 14.2 °C | 89.15 mm |
| April | 6.7 °C | 19.7 °C | 123.95 mm |
| May | 12.4 °C | 24.2 °C | 150.88 mm |
| June | 17.5 °C | 28.9 °C | 121.67 mm |
| July | 19.7 °C | 31.5 °C | 112.52 mm |
| August | 18.8 °C | 31.2 °C | 100.08 mm |
| September | 14.2 °C | 27.2 °C | 115.06 mm |
| October | 7.6 °C | 20.9 °C | 94.23 mm |
| November | 1.8 °C | 13.7 °C | 88.39 mm |
| December | -3.1 °C | 7.8 °C | 67.31 mm |
| Annual | 7.4 °C | 19.5 °C | 1178.05 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 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 |