| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°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: | May 1 - May 10 |
| 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 64465 - Lathrop, MO | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 13 | 18 | 29 | 39 | 49 | 59 | 64 | 62 | 53 | 40 | 28 | 18 | 39 |
| Avg Max Temp (°F) | 35 | 41 | 53 | 65 | 74 | 84 | 88 | 87 | 79 | 67 | 51 | 39 | 64 |
| Avg Precip (In.) | 1.2 | 1.28 | 2.63 | 3.51 | 5.09 | 4.43 | 4.71 | 3.79 | 4.37 | 3.18 | 2.49 | 1.65 | 38.33 |