| 2023 Hardiness Zone: | Zone 7b: 5°F to 10°F |
| 2012 Hardiness Zone: | Zone 7a: 0°F to 5°F |
| 1990 Hardiness Zone: | Zone 6b: -5F to 0F |
| Average First Frost Date: | Nov. 1 - Nov. 10 |
| Average Last Frost Date: | Apr. 11 - Apr. 20 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 40b - Osage Cuestas |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 74445 - Morris, OK | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 24 | 29 | 38 | 47 | 57 | 65 | 69 | 67 | 60 | 48 | 37 | 28 | 48 |
| Avg Max Temp (°F) | 47 | 54 | 63 | 72 | 79 | 87 | 93 | 93 | 84 | 75 | 61 | 51 | 72 |
| Avg Precip (In.) | 1.81 | 2.23 | 3.75 | 4.1 | 5.67 | 4.67 | 3.02 | 2.61 | 4.76 | 4.21 | 3.87 | 2.65 | 43.35 |