| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 24°F | 39°F | 31°F | 6.8" |
| February | 23°F | 39°F | 30°F | 6.4" |
| March | 29°F | 46°F | 37°F | 7.5" |
| April | 38°F | 56°F | 47°F | 9.7" |
| May | 48°F | 65°F | 56°F | 6.2" |
| June | 58°F | 73°F | 65°F | 8.0" |
| July | 64°F | 79°F | 72°F | 9.7" |
| August | 62°F | 77°F | 69°F | 9.2" |
| September | 55°F | 70°F | 62°F | 14.3" |
| October | 45°F | 61°F | 53°F | 4.9" |
| November | 38°F | 52°F | 45°F | 10.3" |
| December | 28°F | 44°F | 36°F | 7.1" |
| Index | Sagamore | Massachusetts | National |
| Air quality index | 36 | 40 | 42 |
| Pollution index | 7,903,830 | 8,399,610 | 2,726,193 |
| Measurement | Total |
| Days measured | 359 |
| Days with good air quality | 348 |
| Days with moderate air quality | 11 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.060% |
| Benzene | 0.070% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.080% |
| Mercury | 0.030% |
| City | Population | Air Quality Index | National Avg. |
| North Plymouth, MA | 4,258 | 36 | 28.0% |
| East Falmouth, MA | 6,163 | 36 | 28.0% |
| Monomoscoy Island, MA | 114 | 36 | 28.0% |
| Pocasset, MA | 2,596 | 36 | 28.0% |
| Seconsett Island, MA | 37 | 36 | 28.0% |
| Sagamore, MA | 3,792 | 36 | 28.0% |
| City | Population | Air Quality Index | National Avg. |
| Roosevelt Park, MI | 3,792 | 38 | 24.0% |
| Val Verde Park, TX | 3,792 | 25 | 50.0% |
| North Wildwood, NJ | 3,794 | 37 | 26.0% |
| Carmel-by-the-Sea, CA | 3,789 | 37 | 26.0% |
| Nash, TX | 3,789 | 39 | 22.0% |
| Sagamore, MA | 3,792 | 36 | 28.0% |
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