| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 36°F | 59°F | 46°F | 7.3" |
| February | 40°F | 63°F | 50°F | 3.6" |
| March | 48°F | 71°F | 59°F | 3.7" |
| April | 55°F | 78°F | 66°F | 6.6" |
| May | 62°F | 84°F | 73°F | 6.5" |
| June | 71°F | 93°F | 82°F | 7.0" |
| July | 74°F | 96°F | 85°F | 4.2" |
| August | 74°F | 97°F | 85°F | 5.7" |
| September | 66°F | 90°F | 77°F | 5.4" |
| October | 55°F | 80°F | 67°F | 10.9" |
| November | 47°F | 69°F | 57°F | 3.2" |
| December | 38°F | 60°F | 48°F | 3.7" |
| Index | Rendon | Texas | National |
| Air quality index | 51 | 52 | 42 |
| Pollution index | 453,692 | 2,009,300 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 181 |
| Days with moderate air quality | 155 |
| Days w/ poor A.Q. for sensitive groups | 28 |
| Days with unhealthy air quality | 1 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.005% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.003% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Alvarado, TX | 4,414 | 33 | 34.0% |
| Joshua, TX | 8,091 | 33 | 34.0% |
| Edgecliff Village, TX | 3,069 | 33 | 34.0% |
| Briaroaks, TX | 744 | 33 | 34.0% |
| Keene, TX | 6,640 | 33 | 34.0% |
| Rendon, TX | 13,673 | 51 | 2.0% |
| City | Population | Air Quality Index | National Avg. |
| Auburn, IN | 13,673 | 45 | 10.0% |
| Montgomeryville, PA | 13,672 | 51 | 2.0% |
| Huron, SD | 13,672 | 25 | 50.0% |
| Lahaina, HI | 13,680 | 15 | 70.0% |
| Baker, LA | 13,684 | 45 | 10.0% |
| Rendon, TX | 13,673 | 51 | 2.0% |