Normangee, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 13.6 °C (low) to 25.9 °C (high). Annual precipitation averages 1121.7 Millimeters. Normangee is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Mar. 11 - Mar. 20 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 3.6 °C | 15.6 °C | 95.5 mm |
| February | 5.7 °C | 17.8 °C | 81.79 mm |
| March | 9.1 °C | 21.7 °C | 92.2 mm |
| April | 13.1 °C | 25.7 °C | 85.09 mm |
| May | 17.9 °C | 29.4 °C | 120.65 mm |
| June | 21.7 °C | 32.9 °C | 100.58 mm |
| July | 23.1 °C | 34.8 °C | 64.01 mm |
| August | 22.7 °C | 35.4 °C | 76.71 mm |
| September | 19.6 °C | 32.2 °C | 93.98 mm |
| October | 13.9 °C | 27.2 °C | 110.24 mm |
| November | 8.5 °C | 21 °C | 97.79 mm |
| December | 4.6 °C | 16.5 °C | 103.12 mm |
| Annual | 13.6 °C | 25.9 °C | 1121.66 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 11 - Mar. 20 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 9a : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |