| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 25°F | 46°F | 34°F | 3.6" |
| February | 26°F | 48°F | 36°F | 3.1" |
| March | 35°F | 60°F | 46°F | 4.3" |
| April | 45°F | 72°F | 58°F | 4.6" |
| May | 52°F | 78°F | 65°F | 4.9" |
| June | 61°F | 86°F | 73°F | 4.6" |
| July | 65°F | 87°F | 75°F | 6.8" |
| August | 63°F | 87°F | 74°F | 3.6" |
| September | 57°F | 82°F | 68°F | 3.5" |
| October | 45°F | 70°F | 57°F | 3.7" |
| November | 35°F | 60°F | 46°F | 3.0" |
| December | 29°F | 49°F | 38°F | 4.4" |
| Index | Kermit | West Virginia | National |
| Air quality index | 42 | 126 | 42 |
| Pollution index | 390,130 | 1,996,538 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 299 |
| Days with moderate air quality | 66 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Warfield, KY | 214 | 42 | 16.0% |
| Delbarton, WV | 522 | 42 | 16.0% |
| Crum, WV | 44 | 42 | 16.0% |
| Williamson, WV | 2,735 | 42 | 16.0% |
| South Williamson, KY | 516 | 42 | 16.0% |
| Kermit, WV | 243 | 42 | 16.0% |
| City | Population | Air Quality Index | National Avg. |
| Koyuk, AK | 243 | 38 | 24.0% |
| Malcolm, AL | 243 | 42 | 16.0% |
| East Globe, AZ | 243 | 60 | 20.0% |
| McNeal, AZ | 243 | 45 | 10.0% |
| Bloomfield, CA | 243 | 34 | 32.0% |
| Kermit, WV | 243 | 42 | 16.0% |
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