Bigelow, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 41.5 °F (low) to 64 °F (high). Annual precipitation averages 36.2 Inches. Bigelow 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 | 15.6 °F | 35.7 °F | 0.8 in. |
| February | 19.4 °F | 41.0 °F | 1.21 in. |
| March | 29.8 °F | 53.5 °F | 2.16 in. |
| April | 40.8 °F | 65.0 °F | 3.57 in. |
| May | 52.9 °F | 75.2 °F | 5.14 in. |
| June | 63.0 °F | 84.0 °F | 4.89 in. |
| July | 66.7 °F | 87.4 °F | 5.0 in. |
| August | 63.8 °F | 85.7 °F | 3.89 in. |
| September | 54.6 °F | 79.8 °F | 3.3 in. |
| October | 42.2 °F | 67.6 °F | 2.93 in. |
| November | 29.9 °F | 52.8 °F | 2.0 in. |
| December | 19.8 °F | 39.7 °F | 1.34 in. |
| Annual | 41.5 °F | 64 °F | 36.23 in. |
| 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 : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |