Muenster, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 51.9 °F (low) to 74.6 °F (high). Annual precipitation averages 38.1 Inches. Muenster is located in USDA Plant Hardiness Zone 8a. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 31.3 °F | 54.1 °F | 1.77 in. |
| February | 34.7 °F | 58.1 °F | 2.49 in. |
| March | 42.6 °F | 66.4 °F | 3.22 in. |
| April | 50.2 °F | 74.1 °F | 3.58 in. |
| May | 60.2 °F | 80.9 °F | 4.99 in. |
| June | 68.7 °F | 89.0 °F | 4.16 in. |
| July | 72.3 °F | 93.9 °F | 2.65 in. |
| August | 71.7 °F | 94.5 °F | 2.33 in. |
| September | 64.1 °F | 87.0 °F | 3.54 in. |
| October | 52.5 °F | 76.3 °F | 4.16 in. |
| November | 42.0 °F | 64.8 °F | 2.64 in. |
| December | 33.0 °F | 55.5 °F | 2.53 in. |
| Annual | 51.9 °F | 74.6 °F | 38.06 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 8a : 10°F to 15°F |
| Plant Hardiness Zone - 2012 | Zone 7b : 5°F to 10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |