| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 35°F | 61°F | 46°F | 2.8" |
| February | 40°F | 66°F | 51°F | 3.2" |
| March | 47°F | 75°F | 59°F | 3.9" |
| April | 57°F | 83°F | 69°F | 3.6" |
| May | 63°F | 87°F | 74°F | 1.4" |
| June | 73°F | 95°F | 84°F | 1.2" |
| July | 76°F | 98°F | 86°F | 2.4" |
| August | 75°F | 99°F | 86°F | 1.8" |
| September | 67°F | 91°F | 78°F | 1.7" |
| October | 56°F | 82°F | 68°F | 2.8" |
| November | 46°F | 71°F | 57°F | 1.7" |
| December | 37°F | 61°F | 47°F | 3.0" |
| Index | Cisco | Texas | National |
| Air quality index | 33 | 52 | 42 |
| Pollution index | 611,575 | 2,009,300 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 329 |
| Days with moderate air quality | 33 |
| Days w/ poor A.Q. for sensitive groups | 3 |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.010% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Eastland, TX | 3,865 | 33 | 34.0% |
| Moran, TX | 219 | 33 | 34.0% |
| Putnam, TX | 90 | 33 | 34.0% |
| Carbon, TX | 302 | 33 | 34.0% |
| Cisco, TX | 3,786 | 33 | 34.0% |
| City | Population | Air Quality Index | National Avg. |
| St. Augusta, MN | 3,785 | 32 | 36.0% |
| Forestville, CA | 3,788 | 34 | 32.0% |
| Shadyside, OH | 3,788 | 39 | 22.0% |
| Del Monte Forest, CA | 3,783 | 37 | 26.0% |
| Carmel-by-the-Sea, CA | 3,789 | 37 | 26.0% |
| Cisco, TX | 3,786 | 33 | 34.0% |
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