| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 5b: -15°F to -10°F |
| 2012 Hardiness Zone: | Zone 5b: -15°F to -10°F |
| 1990 Hardiness Zone: | Zone 5a: -20F to -15F |
| Average First Frost Date: | Oct. 11 - Oct. 20 |
| Average Last Frost Date: | Apr. 21 - Apr. 30 |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 40a - Loess Flats and Till Plains |
| Heat Zone Days: | 31 - 45 days Over 86°F |
Annual Climate Data for ZIP Code 63548 - Lancaster, MO | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 12 | 18 | 28 | 39 | 50 | 60 | 64 | 62 | 53 | 42 | 29 | 18 | 40 |
| Avg Max Temp (°F) | 31 | 38 | 50 | 62 | 73 | 82 | 86 | 85 | 77 | 65 | 49 | 36 | 61 |
| Avg Precip (In.) | 1.18 | 1.21 | 2.44 | 3.47 | 4.78 | 4.19 | 4.67 | 3.94 | 4.04 | 2.91 | 2.6 | 1.65 | 37.07 |