| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 5b: -15°F to -10°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 5b: -15°F to -10°F |
| 1990 Hardiness Zone: | Zone 1b: -15F to -10F |
| 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: | 46 - 60 days Over 86°F |
Annual Climate Data for ZIP Code 64062 - Lawson, MO | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 14 | 19 | 29 | 40 | 50 | 60 | 65 | 62 | 53 | 42 | 30 | 19 | 40 |
| Avg Max Temp (°F) | 35 | 41 | 53 | 64 | 74 | 84 | 88 | 87 | 79 | 67 | 51 | 39 | 64 |
| Avg Precip (In.) | 1.31 | 1.35 | 2.69 | 3.66 | 5.07 | 4.48 | 4.54 | 3.68 | 4.34 | 3.24 | 2.67 | 1.78 | 38.83 |