| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 44°F | 65°F | 53°F | 3.7" |
| February | 48°F | 69°F | 57°F | 2.3" |
| March | 54°F | 75°F | 64°F | 3.5" |
| April | 61°F | 81°F | 70°F | 4.7" |
| May | 68°F | 87°F | 76°F | 6.5" |
| June | 73°F | 93°F | 82°F | 3.8" |
| July | 75°F | 94°F | 83°F | 5.2" |
| August | 75°F | 95°F | 84°F | 6.9" |
| September | 71°F | 90°F | 79°F | 3.5" |
| October | 61°F | 84°F | 71°F | 4.6" |
| November | 53°F | 75°F | 63°F | 2.5" |
| December | 47°F | 67°F | 56°F | 3.1" |
| Index | Pecan Grove | Texas | National |
| Air quality index | 52 | 52 | 42 |
| Pollution index | 1,253,710 | 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 | 0.003% |
| Benzene | 0.040% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.010% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Brookshire, TX | 5,601 | 52 | 4.0% |
| Pattison, TX | 564 | 52 | 4.0% |
| Hilshire Village, TX | 893 | 52 | 4.0% |
| Missouri City, TX | 75,348 | 52 | 4.0% |
| Cinco Ranch, TX | 17,588 | 52 | 4.0% |
| Pecan Grove, TX | 18,204 | 52 | 4.0% |
| City | Population | Air Quality Index | National Avg. |
| Burlington, KY | 18,203 | 54 | 8.0% |
| Newburyport, MA | 18,197 | 37 | 26.0% |
| Cudahy, WI | 18,211 | 44 | 12.0% |
| Steinbach, MB | 18,212 | n/a | |
| Trenton, MI | 18,214 | 56 | 12.0% |
| Pecan Grove, TX | 18,204 | 52 | 4.0% |
Here are the best places to live in Texas
See the best places to live in Pecan Grove
Most Dangerous Cities In The US
Check out the 10 most dangerous cities in Texas