Morning Glory, Texas has a Cold Desert Climate climate (Köppen classification: BWk). Average annual temperatures range from 9.7 °C (low) to 26.6 °C (high). Annual precipitation averages 197.1 Millimeters. Morning Glory is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Feb. 21 - Feb. 29 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -1.2 °C | 15.6 °C | 10.16 mm |
| February | 1.2 °C | 18.7 °C | 9.14 mm |
| March | 5 °C | 23 °C | 5.84 mm |
| April | 8.9 °C | 27.3 °C | 4.06 mm |
| May | 13.8 °C | 31.9 °C | 10.16 mm |
| June | 19.1 °C | 36.3 °C | 17.53 mm |
| July | 20.9 °C | 35.9 °C | 33.53 mm |
| August | 20.1 °C | 34.9 °C | 34.8 mm |
| September | 16.7 °C | 31.9 °C | 27.18 mm |
| October | 9.8 °C | 27.3 °C | 19.05 mm |
| November | 3.1 °C | 20.7 °C | 9.91 mm |
| December | -1.2 °C | 15.3 °C | 15.75 mm |
| Annual | 9.7 °C | 26.6 °C | 197.11 mm |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Feb. 21 - Feb. 29 |
| Average Days With Frost | 30-40 Days |
| Plant Hardiness Zone | Zone 8a : -12.2°C to -9.4°C |
| Plant Hardiness Zone - 2012 | Zone 8a : -12.2°C to -9.4°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | BWk - Cold Desert Climate |