| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 15°F | 32°F | 23°F | 2.7" |
| February | 15°F | 34°F | 24°F | 3.1" |
| March | 23°F | 43°F | 33°F | 2.9" |
| April | 35°F | 58°F | 46°F | 3.4" |
| May | 45°F | 69°F | 57°F | 4.0" |
| June | 54°F | 75°F | 64°F | 5.6" |
| July | 59°F | 80°F | 69°F | 4.9" |
| August | 56°F | 78°F | 67°F | 4.6" |
| September | 50°F | 72°F | 60°F | 4.1" |
| October | 40°F | 60°F | 50°F | 4.9" |
| November | 30°F | 49°F | 39°F | 2.8" |
| December | 22°F | 37°F | 29°F | 3.9" |
| Index | Lenox | Massachusetts | National |
| Air quality index | 37 | 40 | 42 |
| Pollution index | 7,615,940 | 8,399,610 | 2,726,193 |
| Measurement | Total |
| Days measured | 364 |
| Days with good air quality | 320 |
| Days with moderate air quality | 44 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.020% |
| Benzene | 0.080% |
| Carbon Tetrachloride | 0.030% |
| Lead | 0.040% |
| Mercury | 0.630% |
| City | Population | Air Quality Index | National Avg. |
| Great Barrington, MA | 2,213 | 37 | 26.0% |
| Cheshire, MA | 683 | 37 | 26.0% |
| Housatonic, MA | 682 | 37 | 26.0% |
| East Nassau, NY | 457 | 37 | 26.0% |
| Lee, MA | 1,508 | 37 | 26.0% |
| Lenox, MA | 1,984 | 37 | 26.0% |
| City | Population | Air Quality Index | National Avg. |
| Old Saybrook Center, CT | 1,984 | 37 | 26.0% |
| Afton, WY | 1,984 | 43 | 14.0% |
| Berwick, ME | 1,985 | 27 | 46.0% |
| Tylertown, MS | 1,985 | 30 | 40.0% |
| West Tawakoni, TX | 1,985 | 51 | 2.0% |
| Lenox, MA | 1,984 | 37 | 26.0% |
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