| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 33°F | 58°F | 45°F | 3.8" |
| February | 38°F | 65°F | 52°F | 2.0" |
| March | 45°F | 74°F | 60°F | 2.6" |
| April | 51°F | 80°F | 66°F | 2.9" |
| May | 59°F | 86°F | 73°F | 1.5" |
| June | 69°F | 97°F | 84°F | 1.6" |
| July | 69°F | 95°F | 81°F | 4.7" |
| August | 68°F | 93°F | 80°F | 3.8" |
| September | 64°F | 88°F | 76°F | 9.0" |
| October | 55°F | 81°F | 68°F | 3.6" |
| November | 42°F | 69°F | 56°F | 2.3" |
| December | 34°F | 60°F | 47°F | 1.3" |
| Index | Butterfield | Texas | National |
| Air quality index | 53 | 52 | 42 |
| Pollution index | 10,468,500 | 2,009,300 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 147 |
| Days with moderate air quality | 205 |
| Days w/ poor A.Q. for sensitive groups | 11 |
| Days with unhealthy air quality | 2 |
| Pollutant | Total |
| Arsenic | 0.030% |
| Benzene | 0.110% |
| Carbon Tetrachloride | 0.040% |
| Lead | 0.070% |
| Mercury | 0.040% |
| City | Population | Air Quality Index | National Avg. |
| Agua Dulce city, TX | 840 | 53 | 6.0% |
| Sparks, TX | 3,873 | 53 | 6.0% |
| Homestead Meadows South, TX | 6,163 | 53 | 6.0% |
| Homestead Meadows North, TX | 5,121 | 53 | 6.0% |
| Horizon City, TX | 19,645 | 53 | 6.0% |
| Butterfield, TX | 60 | 53 | 6.0% |
| City | Population | Air Quality Index | National Avg. |
| Igiugig, AK | 60 | 31 | 38.0% |
| Whitestone, AK | 60 | 38 | 24.0% |
| Petrey, AL | 60 | 52 | 4.0% |
| Haswell, CO | 60 | 20 | 60.0% |
| Lake Harbor, FL | 60 | 36 | 28.0% |
| Butterfield, TX | 60 | 53 | 6.0% |
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