| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 50°F | 72°F | 59°F | 4.3" |
| February | 54°F | 78°F | 63°F | 1.0" |
| March | 61°F | 86°F | 72°F | 2.4" |
| April | 67°F | 93°F | 78°F | 0.7" |
| May | 73°F | 97°F | 84°F | 6.8" |
| June | 78°F | 102°F | 89°F | 3.6" |
| July | 78°F | 98°F | 87°F | 5.0" |
| August | 79°F | 101°F | 89°F | 6.2" |
| September | 75°F | 96°F | 84°F | 6.5" |
| October | 67°F | 90°F | 77°F | 4.5" |
| November | 59°F | 83°F | 69°F | 0.8" |
| December | 51°F | 74°F | 61°F | 4.0" |
| Index | Los Arcos | Texas | National |
| Air quality index | 41 | 52 | 42 |
| Pollution index | 2,768,160 | 2,009,300 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 258 |
| Days with moderate air quality | 106 |
| 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 | 0.010% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Los Nopalitos, TX | 0 | 41 | 18.0% |
| La Presa, TX | 249 | 41 | 18.0% |
| La Coma, TX | 42 | 41 | 18.0% |
| Las Pilas, TX | 0 | 41 | 18.0% |
| Pueblo Nuevo, TX | 721 | 41 | 18.0% |
| Los Arcos, TX | 38 | 41 | 18.0% |
| City | Population | Air Quality Index | National Avg. |
| Central, AK | 38 | 38 | 24.0% |
| Whelen Springs, AR | 38 | 32 | 36.0% |
| McClenney Tract, CA | 38 | 67 | 34.0% |
| Valley Ranch, CA | 38 | 44 | 12.0% |
| Sawpit, CO | 38 | 44 | 12.0% |
| Los Arcos, TX | 38 | 41 | 18.0% |
Here are the best places to live in Texas
Top 10 cities in Texas with the best education system
10 best cities to buy a new house in Texas
These are the 10 most affordable cities in Texas