| 2023 Hardiness Zone: | Zone 6b: -5°F to 0°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F |
| 1990 Hardiness Zone: | Zone 1b: -15F to -10F |
| Average First Frost Date: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | Apr. 11 - Apr. 20 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 40c - Wooded Osage Plains |
| Heat Zone Days: | 61 - 90 days Over 86°F |
Annual Climate Data for ZIP Code 64730 - Butler, MO | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 18 | 23 | 33 | 42 | 53 | 63 | 68 | 65 | 56 | 45 | 33 | 23 | 43 |
| Avg Max Temp (°F) | 39 | 46 | 58 | 67 | 76 | 85 | 91 | 89 | 82 | 71 | 56 | 44 | 67 |
| Avg Precip (In.) | 1.73 | 1.73 | 3.16 | 4.01 | 4.94 | 5.38 | 3.98 | 3.82 | 4.43 | 3.68 | 3.36 | 1.98 | 42.2 |