| 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 | Richmond | 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. |
| Beasley, TX | 992 | 52 | 4.0% |
| Kendleton, TX | 327 | 52 | 4.0% |
| Simonton, TX | 842 | 52 | 4.0% |
| Fifth Street, TX | 2,179 | 52 | 4.0% |
| Cumings, TX | 1,233 | 52 | 4.0% |
| Richmond, TX | 12,592 | 52 | 4.0% |
| City | Population | Air Quality Index | National Avg. |
| Maili, HI | 12,591 | 30 | 40.0% |
| Truro, NS | 12,598 | n/a | |
| Half Moon Bay, CA | 12,583 | 43 | 14.0% |
| Wilton Manors, FL | 12,582 | 41 | 18.0% |
| Erin, ON | 12,607 | n/a | |
| Richmond, TX | 12,592 | 52 | 4.0% |
Here are the best places to live in Texas
These are the 10 cheapest cities in Texas
Check out the 10 safest cities in Texas
See the best places to live in Richmond