| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 16°F | 33°F | 24°F | 4.6" |
| February | 14°F | 34°F | 23°F | 3.7" |
| March | 20°F | 42°F | 31°F | 6.0" |
| April | 34°F | 58°F | 45°F | 6.9" |
| May | 42°F | 68°F | 55°F | 3.7" |
| June | 55°F | 80°F | 67°F | 6.4" |
| July | 58°F | 81°F | 69°F | 7.3" |
| August | 58°F | 81°F | 69°F | 3.5" |
| September | 50°F | 76°F | 62°F | 6.4" |
| October | 43°F | 64°F | 52°F | 12.6" |
| November | 29°F | 50°F | 39°F | 6.2" |
| December | 20°F | 36°F | 28°F | 4.0" |
| Index | Shelburne Falls | Massachusetts | National |
| Air quality index | 37 | 40 | 42 |
| Pollution index | 7,859,360 | 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 | 0.030% |
| Benzene | 0.070% |
| Carbon Tetrachloride | 0.030% |
| Lead | 0.320% |
| Mercury | 0.070% |
| City | Population | Air Quality Index | National Avg. |
| Greenfield Town, MA | 18,076 | 34 | 32.0% |
| Turners Falls, MA | 3,779 | 34 | 32.0% |
| Millers Falls, MA | 1,192 | 34 | 32.0% |
| Hinsdale, NH | 1,514 | 34 | 32.0% |
| Jacksonville, VT | 260 | 35 | 30.0% |
| Shelburne Falls, MA | 1,702 | 37 | 26.0% |
| City | Population | Air Quality Index | National Avg. |
| Clinton, LA | 1,702 | 45 | 10.0% |
| Massey Drive, NL | 1,702 | n/a | |
| Bear Creek, AL | 1,703 | 37 | 26.0% |
| Spring Valley, AZ | 1,701 | 43 | 14.0% |
| Poquonock Bridge, CT | 1,701 | 37 | 26.0% |
| Shelburne Falls, MA | 1,702 | 37 | 26.0% |