| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 41°F | 62°F | 50°F | 3.6" |
| February | 44°F | 66°F | 54°F | 5.0" |
| March | 52°F | 74°F | 61°F | 7.7" |
| April | 58°F | 80°F | 68°F | 4.9" |
| May | 65°F | 85°F | 74°F | 12.2" |
| June | 71°F | 91°F | 80°F | 7.2" |
| July | 73°F | 92°F | 81°F | 6.9" |
| August | 74°F | 94°F | 82°F | 7.8" |
| September | 68°F | 89°F | 77°F | 1.6" |
| October | 58°F | 82°F | 68°F | 15.7" |
| November | 50°F | 72°F | 59°F | 9.0" |
| December | 44°F | 64°F | 53°F | 4.8" |
| Index | Kirbyville | Texas | National |
| Air quality index | 45 | 52 | 42 |
| Pollution index | 1,518,140 | 2,009,300 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 234 |
| Days with moderate air quality | 122 |
| Days w/ poor A.Q. for sensitive groups | 8 |
| Days with unhealthy air quality | 1 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.001% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Newton, TX | 2,249 | 45 | 10.0% |
| Buna, TX | 1,908 | 45 | 10.0% |
| Kirbyville, TX | 2,519 | 45 | 10.0% |
| City | Population | Air Quality Index | National Avg. |
| Dover, MA | 2,518 | 43 | 14.0% |
| Carthage, NC | 2,518 | 29 | 42.0% |
| New Hope, PA | 2,518 | 41 | 18.0% |
| Selbyville, DE | 2,520 | 36 | 28.0% |
| Concordia, NJ | 2,520 | 41 | 18.0% |
| Kirbyville, TX | 2,519 | 45 | 10.0% |
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