| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 46°F | 71°F | 57°F | 1.8" |
| February | 50°F | 75°F | 61°F | 1.3" |
| March | 57°F | 79°F | 67°F | 2.4" |
| April | 63°F | 85°F | 73°F | 1.8" |
| May | 69°F | 89°F | 78°F | 3.4" |
| June | 74°F | 93°F | 83°F | 2.8" |
| July | 75°F | 94°F | 84°F | 3.6" |
| August | 75°F | 97°F | 85°F | 2.6" |
| September | 73°F | 93°F | 82°F | 5.2" |
| October | 64°F | 88°F | 75°F | 1.9" |
| November | 55°F | 80°F | 67°F | 2.1" |
| December | 49°F | 72°F | 59°F | 1.5" |
| Index | Tierra Grande | Texas | National |
| Air quality index | 30 | 52 | 42 |
| Pollution index | 1,808,440 | 2,009,300 | 2,726,193 |
| Measurement | Total |
| Days measured | 284 |
| Days with good air quality | 234 |
| Days with moderate air quality | 50 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.030% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.003% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Driscoll, TX | 712 | 30 | 40.0% |
| Robstown, TX | 11,214 | 30 | 40.0% |
| La Paloma-Lost Creek, TX | 573 | 30 | 40.0% |
| Spring Gardens, TX | 536 | 30 | 40.0% |
| Banquete, TX | 520 | 30 | 40.0% |
| Tierra Grande, TX | 281 | 30 | 40.0% |
| City | Population | Air Quality Index | National Avg. |
| Copper Center, AK | 281 | 31 | 38.0% |
| Madrid, AL | 281 | 35 | 30.0% |
| Carl, GA | 281 | 37 | 26.0% |
| Jewett, IL | 281 | 40 | 20.0% |
| Lisbon, IL | 281 | 0 | 100.0% |
| Tierra Grande, TX | 281 | 30 | 40.0% |
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