| 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: | 38b - Lower Boston Mountains |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 74441 - Hulbert, OK | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 26 | 31 | 39 | 49 | 57 | 66 | 70 | 69 | 62 | 50 | 39 | 30 | 49 |
| Avg Max Temp (°F) | 47 | 53 | 63 | 72 | 79 | 86 | 92 | 92 | 84 | 74 | 60 | 50 | 71 |
| Avg Precip (In.) | 2.19 | 2.36 | 4 | 4.2 | 5.55 | 5.01 | 3.1 | 3.07 | 5.07 | 4.24 | 4.4 | 3.14 | 46.33 |