| 2023 Hardiness Zone: | Zone 8a: 10°F to 15°F Zone 7b: 5°F to 10°F |
| 2012 Hardiness Zone: | Zone 7b: 5°F to 10°F Zone 7a: 0°F to 5°F |
| 1990 Hardiness Zone: | Zone 7a: 0F to 5F |
| Average First Frost Date: | Nov. 1 - Nov. 10 |
| Average Last Frost Date: | Apr. 1 - Apr. 10 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 37e - Lower Canadian Hills |
| Heat Zone Days: | 91 - 120 days Over 86°F |
Annual Climate Data for ZIP Code 74501 - McAlester, OK | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 28 | 33 | 41 | 49 | 58 | 67 | 71 | 70 | 63 | 51 | 40 | 31 | 50 |
| Avg Max Temp (°F) | 49 | 56 | 64 | 73 | 80 | 88 | 93 | 93 | 85 | 75 | 62 | 52 | 73 |
| Avg Precip (In.) | 2.28 | 2.69 | 4.01 | 4.19 | 5.93 | 4.57 | 2.81 | 2.72 | 4.69 | 4.61 | 4.04 | 3.03 | 45.57 |