| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 48°F | 67°F | 57°F | 1.8" |
| February | 53°F | 70°F | 60°F | 0.8" |
| March | 60°F | 76°F | 67°F | 1.9" |
| April | 67°F | 81°F | 73°F | 1.8" |
| May | 72°F | 86°F | 78°F | 2.6" |
| June | 78°F | 91°F | 84°F | 2.6" |
| July | 79°F | 91°F | 85°F | 3.7" |
| August | 79°F | 93°F | 85°F | 1.4" |
| September | 75°F | 90°F | 82°F | 3.9" |
| October | 68°F | 85°F | 76°F | 1.6" |
| November | 59°F | 76°F | 67°F | 1.8" |
| December | 52°F | 68°F | 59°F | 1.0" |
| Index | Fulton | Texas | National |
| Air quality index | 42 | 52 | 42 |
| Pollution index | 1,901,300 | 2,009,300 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 262 |
| Days with moderate air quality | 102 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.020% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Country Acres, TX | 278 | 42 | 16.0% |
| Paisano Park, TX | 50 | 42 | 16.0% |
| Lamar, TX | 1,073 | 42 | 16.0% |
| Falman, TX | 8 | 42 | 16.0% |
| Rockport, TX | 10,815 | 42 | 16.0% |
| Fulton, TX | 1,202 | 42 | 16.0% |
| City | Population | Air Quality Index | National Avg. |
| Ak-Chin Village, AZ | 1,202 | 74 | 48.0% |
| Mount Gilead, NC | 1,202 | 40 | 20.0% |
| Whitefield, NH | 1,202 | 40 | 20.0% |
| Lenape Heights, PA | 1,202 | 38 | 24.0% |
| Alexander 134, AB | 1,202 | n/a | |
| Fulton, TX | 1,202 | 42 | 16.0% |
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