Brownington, Missouri has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 45.1 °F (low) to 67 °F (high). Annual precipitation averages 43.9 Inches. Brownington 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. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 21.2 °F | 41.6 °F | 1.84 in. |
| February | 24.8 °F | 46.7 °F | 2.02 in. |
| March | 34.0 °F | 57.1 °F | 2.96 in. |
| April | 43.7 °F | 67.3 °F | 4.73 in. |
| May | 54.8 °F | 76.0 °F | 5.64 in. |
| June | 64.4 °F | 84.7 °F | 5.09 in. |
| July | 68.3 °F | 89.5 °F | 4.41 in. |
| August | 66.3 °F | 88.6 °F | 3.94 in. |
| September | 57.6 °F | 80.8 °F | 4.32 in. |
| October | 45.3 °F | 69.8 °F | 3.55 in. |
| November | 34.7 °F | 56.6 °F | 3.12 in. |
| December | 25.9 °F | 45.4 °F | 2.29 in. |
| Annual | 45.1 °F | 67 °F | 43.91 in. |
| 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 6b : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |