| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 32°F | 57°F | 42°F | 2.1" |
| February | 37°F | 63°F | 48°F | 1.1" |
| March | 44°F | 72°F | 56°F | 0.9" |
| April | 53°F | 79°F | 64°F | 0.6" |
| May | 61°F | 86°F | 72°F | 5.6" |
| June | 71°F | 93°F | 81°F | 3.4" |
| July | 73°F | 97°F | 84°F | 4.4" |
| August | 73°F | 97°F | 84°F | 3.7" |
| September | 68°F | 92°F | 79°F | 7.4" |
| October | 56°F | 82°F | 67°F | 2.6" |
| November | 44°F | 68°F | 54°F | 1.4" |
| December | 35°F | 57°F | 44°F | 1.9" |
| Index | Henrietta | Texas | National |
| Air quality index | 26 | 52 | 42 |
| Pollution index | 294,890 | 2,009,300 | 2,726,193 |
| Measurement | Total |
| Days measured | 345 |
| Days with good air quality | 308 |
| Days with moderate air quality | 37 |
| Days w/ poor A.Q. for sensitive groups | |
| Days with unhealthy air quality |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.005% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Ryan, OK | 834 | 26 | 48.0% |
| Petrolia, TX | 415 | 26 | 48.0% |
| Terral, OK | 399 | 26 | 48.0% |
| Bellevue, TX | 443 | 26 | 48.0% |
| Dean, TX | 461 | 26 | 48.0% |
| Henrietta, TX | 3,073 | 26 | 48.0% |
| City | Population | Air Quality Index | National Avg. |
| Grenelefe, FL | 3,073 | 36 | 28.0% |
| Wallburg, NC | 3,073 | 45 | 10.0% |
| Wildwood Crest, NJ | 3,073 | 37 | 26.0% |
| Lodi, WI | 3,073 | 35 | 30.0% |
| Emerald Mountain, AL | 3,072 | 52 | 4.0% |
| Henrietta, TX | 3,073 | 26 | 48.0% |
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