| 2023 Hardiness Zone: | Zone 9a: 20°F to 25°F |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 9a: 20°F to 25°F |
| 1990 Hardiness Zone: | Zone 8b: 15F to 20F |
| Average First Frost Date: | Nov. 21 - Nov. 30 |
| Average Last Frost Date: | Feb. 21 - Feb. 29 |
| Koppen-Geiger Climate Zone: | Cfa - Humid Subtropical Climate |
| Ecoregion: | 35e - Southern Tertiary Uplands |
| Heat Zone Days: | 121 - 150 days Over 86°F |
Annual Climate Data for ZIP Code 77304 - Conroe, TX | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 40 | 43 | 50 | 57 | 65 | 71 | 73 | 72 | 68 | 58 | 49 | 41 | 57 |
| Avg Max Temp (°F) | 61 | 65 | 72 | 79 | 85 | 91 | 95 | 95 | 89 | 81 | 70 | 63 | 79 |
| Avg Precip (In.) | 4.18 | 3.03 | 3.11 | 3.76 | 5.46 | 4.65 | 3.16 | 3.67 | 4.55 | 4.56 | 4.7 | 4.3 | 49.13 |