Glidden, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 14.4 °C (low) to 26.7 °C (high). Annual precipitation averages 1097 Millimeters. Glidden is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 1 - Feb. 10 through the first frost around Dec. 11 - Dec. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 4.9 °C | 17 °C | 90.93 mm |
| February | 7.1 °C | 18.9 °C | 69.34 mm |
| March | 10.4 °C | 22.6 °C | 86.61 mm |
| April | 14.1 °C | 26.6 °C | 94.49 mm |
| May | 18.6 °C | 30.2 °C | 116.08 mm |
| June | 22 °C | 33.2 °C | 108.71 mm |
| July | 22.8 °C | 34.6 °C | 66.55 mm |
| August | 22.7 °C | 35.7 °C | 82.55 mm |
| September | 20.1 °C | 32.7 °C | 86.87 mm |
| October | 14.7 °C | 28.2 °C | 107.7 mm |
| November | 9.3 °C | 22.3 °C | 97.54 mm |
| December | 5.9 °C | 18.1 °C | 89.66 mm |
| Annual | 14.4 °C | 26.7 °C | 1097.03 mm |
| Average First Frost Date | Dec. 11 - Dec. 20 |
| Average Last Frost Date | Feb. 1 - Feb. 10 |
| Average Days With Frost | 10-20 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 |