| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 41°F | 58°F | 48°F | 5.9" |
| February | 43°F | 62°F | 51°F | 8.6" |
| March | 51°F | 70°F | 59°F | 10.9" |
| April | 57°F | 77°F | 66°F | 4.6" |
| May | 64°F | 83°F | 72°F | 1.5" |
| June | 72°F | 90°F | 80°F | 4.8" |
| July | 73°F | 92°F | 82°F | 4.2" |
| August | 74°F | 93°F | 83°F | 5.8" |
| September | 69°F | 88°F | 77°F | 6.7" |
| October | 59°F | 79°F | 68°F | 10.3" |
| November | 50°F | 68°F | 58°F | 0.2" |
| December | 43°F | 60°F | 50°F | 7.2" |
| Index | New Summerfield | Texas | National |
| Air quality index | 36 | 52 | 42 |
| Pollution index | 3,084,680 | 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 | 0.002% |
| Benzene | 0.040% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.040% |
| Mercury | 0.020% |
| City | Population | Air Quality Index | National Avg. |
| Jacksonville, TX | 14,809 | 36 | 28.0% |
| Gallatin, TX | 313 | 36 | 28.0% |
| Troup, TX | 2,034 | 36 | 28.0% |
| Reklaw, TX | 374 | 36 | 28.0% |
| Bullard, TX | 3,444 | 36 | 28.0% |
| New Summerfield, TX | 825 | 36 | 28.0% |
| City | Population | Air Quality Index | National Avg. |
| Bradbury, CA | 825 | 72 | 44.0% |
| Annawan, IL | 825 | 42 | 16.0% |
| Sheridan, MI | 825 | 38 | 24.0% |
| Bashaw, AB | 825 | n/a | |
| Floyd Hill, CO | 824 | 47 | 6.0% |
| New Summerfield, TX | 825 | 36 | 28.0% |
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