| 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 74145 - Tulsa, OK | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 25 | 29 | 38 | 48 | 57 | 66 | 71 | 69 | 61 | 49 | 38 | 28 | 48 |
| Avg Max Temp (°F) | 46 | 53 | 62 | 72 | 79 | 87 | 93 | 93 | 84 | 74 | 60 | 50 | 71 |
| Avg Precip (In.) | 1.61 | 2.01 | 3.57 | 3.84 | 5.7 | 4.68 | 2.94 | 2.74 | 4.74 | 3.9 | 3.67 | 2.43 | 41.82 |