| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 26°F | 59°F | 40°F | 0.8" |
| February | 29°F | 63°F | 44°F | 0.8" |
| March | 38°F | 74°F | 54°F | 1.2" |
| April | 45°F | 81°F | 62°F | 1.2" |
| May | 54°F | 86°F | 69°F | 3.1" |
| June | 65°F | 95°F | 79°F | 2.2" |
| July | 68°F | 94°F | 81°F | 2.6" |
| August | 66°F | 94°F | 79°F | 2.1" |
| September | 59°F | 87°F | 72°F | 3.1" |
| October | 48°F | 80°F | 62°F | 1.7" |
| November | 35°F | 70°F | 51°F | 0.5" |
| December | 27°F | 59°F | 41°F | 0.9" |
| Index | Petersburg | Texas | National |
| Air quality index | 25 | 52 | 42 |
| Pollution index | 305,918 | 2,009,300 | 2,726,193 |
| Measurement | Total |
| Days measured | 330 |
| Days with good air quality | 316 |
| Days with moderate air quality | 13 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.002% |
| Benzene | 0.004% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.004% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Idalou, TX | 1,814 | 25 | 50.0% |
| Abernathy, TX | 3,408 | 25 | 50.0% |
| Lorenzo, TX | 1,097 | 25 | 50.0% |
| Floydada, TX | 2,707 | 25 | 50.0% |
| New Deal, TX | 1,058 | 25 | 50.0% |
| Petersburg, TX | 1,034 | 25 | 50.0% |
| City | Population | Air Quality Index | National Avg. |
| Snead, AL | 1,034 | 43 | 14.0% |
| Center Hill, FL | 1,034 | 30 | 40.0% |
| Willards, MD | 1,034 | 36 | 28.0% |
| Kittery Point, ME | 1,034 | 37 | 26.0% |
| Maypearl, TX | 1,034 | 41 | 18.0% |
| Petersburg, TX | 1,034 | 25 | 50.0% |
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