| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 46°F | 66°F | 55°F | 3.7" |
| February | 49°F | 69°F | 58°F | 2.4" |
| March | 56°F | 75°F | 65°F | 3.2" |
| April | 62°F | 80°F | 71°F | 5.0" |
| May | 69°F | 86°F | 77°F | 4.7" |
| June | 75°F | 92°F | 83°F | 4.2" |
| July | 76°F | 93°F | 84°F | 5.7" |
| August | 77°F | 94°F | 84°F | 7.4" |
| September | 73°F | 90°F | 81°F | 4.1" |
| October | 63°F | 84°F | 73°F | 5.3" |
| November | 54°F | 75°F | 64°F | 4.1" |
| December | 49°F | 67°F | 57°F | 3.8" |
| Index | League City | Texas | National |
| Air quality index | 52 | 52 | 42 |
| Pollution index | 701,652 | 2,009,300 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 171 |
| Days with moderate air quality | 163 |
| Days w/ poor A.Q. for sensitive groups | 26 |
| Days with unhealthy air quality | 4 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.003% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Alvin, TX | 26,592 | 52 | 4.0% |
| Pearland, TX | 125,817 | 52 | 4.0% |
| El Lago, TX | 2,805 | 52 | 4.0% |
| Nassau Bay, TX | 4,009 | 52 | 4.0% |
| Taylor Lake Village, TX | 3,685 | 52 | 4.0% |
| League City, TX | 105,410 | 52 | 4.0% |
| City | Population | Air Quality Index | National Avg. |
| Columbia, MD | 105,412 | 46 | 8.0% |
| Chatham-Kent, ON | 105,414 | n/a | |
| Santa Maria, CA | 105,528 | 46 | 8.0% |
| Davie, FL | 105,594 | 41 | 18.0% |
| Brantford, ON | 105,103 | n/a | |
| League City, TX | 105,410 | 52 | 4.0% |
Here are the best places to live in Texas
These are the 10 most affordable cities in Texas
Top 10 best public schools in League City
10 best cities to buy a new house in Texas