| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 39°F | 60°F | 48°F | 2.5" |
| February | 43°F | 64°F | 52°F | 1.9" |
| March | 51°F | 72°F | 60°F | 3.9" |
| April | 57°F | 79°F | 67°F | 2.8" |
| May | 64°F | 84°F | 73°F | 3.0" |
| June | 72°F | 92°F | 81°F | 3.1" |
| July | 73°F | 94°F | 83°F | 2.0" |
| August | 74°F | 96°F | 84°F | 1.9" |
| September | 68°F | 90°F | 78°F | 2.5" |
| October | 58°F | 80°F | 68°F | 3.8" |
| November | 49°F | 70°F | 58°F | 3.5" |
| December | 42°F | 61°F | 50°F | 3.2" |
| Index | Poynor | Texas | National |
| Air quality index | 36 | 52 | 42 |
| Pollution index | 1,202,460 | 2,009,300 | 2,726,193 |
| Measurement | Total |
| Days measured | 364 |
| Days with good air quality | 326 |
| Days with moderate air quality | 37 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.004% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Frankston, TX | 1,200 | 36 | 28.0% |
| Coffee City, TX | 267 | 36 | 28.0% |
| Shadybrook, TX | 2,655 | 36 | 28.0% |
| Moore Station, TX | 154 | 36 | 28.0% |
| Cuney, TX | 134 | 36 | 28.0% |
| Poynor, TX | 357 | 36 | 28.0% |
| City | Population | Air Quality Index | National Avg. |
| Shonto, AZ | 357 | 45 | 10.0% |
| Chacra, CO | 357 | 44 | 12.0% |
| City of Creede, CO | 357 | 44 | 12.0% |
| La Crosse, FL | 357 | 35 | 30.0% |
| Millbrook, IL | 357 | 0 | 100.0% |
| Poynor, TX | 357 | 36 | 28.0% |
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