| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 19°F | 39°F | 29°F | 3.1" |
| February | 18°F | 40°F | 29°F | 2.8" |
| March | 27°F | 48°F | 37°F | 3.2" |
| April | 37°F | 61°F | 49°F | 3.7" |
| May | 46°F | 71°F | 59°F | 3.4" |
| June | 55°F | 79°F | 67°F | 4.5" |
| July | 61°F | 85°F | 73°F | 3.6" |
| August | 57°F | 83°F | 71°F | 3.6" |
| September | 51°F | 77°F | 64°F | 3.2" |
| October | 41°F | 66°F | 53°F | 4.9" |
| November | 32°F | 55°F | 43°F | 3.6" |
| December | 25°F | 45°F | 34°F | 4.0" |
| Index | Millis-Clicquot | Massachusetts | National |
| Air quality index | 43 | 40 | 42 |
| Pollution index | 14,818,200 | 8,399,610 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 291 |
| Days with moderate air quality | 73 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.020% |
| Benzene | 0.150% |
| Carbon Tetrachloride | 0.050% |
| Lead | 0.130% |
| Mercury | 0.040% |
| City | Population | Air Quality Index | National Avg. |
| Framingham, MA | 74,706 | 40 | 20.0% |
| Hopedale, MA | 3,750 | 40 | 20.0% |
| Hopkinton, MA | 3,986 | 40 | 20.0% |
| Milford, MA | 26,685 | 40 | 20.0% |
| Westborough, MA | 4,150 | 40 | 20.0% |
| Millis-Clicquot, MA | 4,617 | 43 | 14.0% |
| City | Population | Air Quality Index | National Avg. |
| Shelley, ID | 4,617 | 27 | 46.0% |
| Surfside Beach, SC | 4,617 | 14 | 72.0% |
| Millsboro, DE | 4,616 | 36 | 28.0% |
| Barrhead, AB | 4,616 | n/a | |
| Ogallala, NE | 4,618 | 19 | 62.0% |
| Millis-Clicquot, MA | 4,617 | 43 | 14.0% |