| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 35°F | 61°F | 46°F | 2.8" |
| February | 40°F | 66°F | 51°F | 3.2" |
| March | 47°F | 75°F | 59°F | 3.9" |
| April | 57°F | 83°F | 69°F | 3.6" |
| May | 63°F | 87°F | 74°F | 1.4" |
| June | 73°F | 95°F | 84°F | 1.2" |
| July | 76°F | 98°F | 86°F | 2.4" |
| August | 75°F | 99°F | 86°F | 1.8" |
| September | 67°F | 91°F | 78°F | 1.7" |
| October | 56°F | 82°F | 68°F | 2.8" |
| November | 46°F | 71°F | 57°F | 1.7" |
| December | 37°F | 61°F | 47°F | 3.0" |
| Index | Haskell | Texas | National |
| Air quality index | 26 | 52 | 42 |
| Pollution index | 122,809 | 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 | 0.003% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Stamford, TX | 2,898 | 26 | 48.0% |
| Rochester, TX | 339 | 26 | 48.0% |
| Weinert, TX | 216 | 26 | 48.0% |
| Rule, TX | 694 | 26 | 48.0% |
| Haskell, TX | 3,194 | 26 | 48.0% |
| City | Population | Air Quality Index | National Avg. |
| Mattapoisett Center, MA | 3,193 | 36 | 28.0% |
| Cloverdale, VA | 3,193 | 38 | 24.0% |
| Grangeville, ID | 3,195 | 29 | 42.0% |
| Tipton, IA | 3,192 | 35 | 30.0% |
| West Wyomissing, PA | 3,192 | 42 | 16.0% |
| Haskell, TX | 3,194 | 26 | 48.0% |
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