| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 47°F | 65°F | 55°F | 3.7" |
| February | 49°F | 68°F | 57°F | 2.9" |
| March | 56°F | 74°F | 64°F | 3.6" |
| April | 62°F | 79°F | 70°F | 5.6" |
| May | 70°F | 87°F | 77°F | 4.0" |
| June | 75°F | 92°F | 83°F | 6.0" |
| July | 76°F | 92°F | 83°F | 9.1" |
| August | 77°F | 93°F | 84°F | 5.1" |
| September | 73°F | 89°F | 80°F | 6.1" |
| October | 64°F | 83°F | 72°F | 10.0" |
| November | 55°F | 75°F | 64°F | 3.7" |
| December | 47°F | 66°F | 56°F | 4.0" |
| Index | Deer Park | 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. |
| Sheldon, TX | 2,179 | 52 | 4.0% |
| Manvel, TX | 11,432 | 52 | 4.0% |
| Channelview, TX | 43,378 | 52 | 4.0% |
| Friendswood, TX | 39,893 | 52 | 4.0% |
| Nassau Bay, TX | 4,009 | 52 | 4.0% |
| Deer Park, TX | 33,599 | 52 | 4.0% |
| City | Population | Air Quality Index | National Avg. |
| Mason, OH | 33,592 | 54 | 8.0% |
| Central Islip, NY | 33,591 | 43 | 14.0% |
| Huntington Station, NY | 33,612 | 43 | 14.0% |
| DeLand, FL | 33,620 | 37 | 26.0% |
| Myrtle Beach, SC | 33,638 | 14 | 72.0% |
| Deer Park, TX | 33,599 | 52 | 4.0% |
Here are the best places to live in Texas
These are the largest cities in Texas
Most Dangerous States In The US
These are the 10 cheapest cities in Texas