| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 6b: -5°F to 0°F |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F |
| 1990 Hardiness Zone: | Zone 1b: -15F to -10F |
| Average First Frost Date: | Oct. 11 - Oct. 20 |
| 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 64040 - Holden, MO | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 17 | 22 | 32 | 43 | 53 | 62 | 67 | 64 | 56 | 44 | 33 | 22 | 43 |
| Avg Max Temp (°F) | 37 | 44 | 56 | 66 | 75 | 84 | 90 | 88 | 80 | 69 | 54 | 42 | 66 |
| Avg Precip (In.) | 1.46 | 1.67 | 3.03 | 3.81 | 5.04 | 4.76 | 4.18 | 3.64 | 4.48 | 3.54 | 3.24 | 1.97 | 40.82 |