| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 20°F | 36°F | 28°F | 5.0" |
| February | 21°F | 38°F | 28°F | 4.7" |
| March | 27°F | 46°F | 35°F | 5.5" |
| April | 39°F | 59°F | 48°F | 4.7" |
| May | 48°F | 68°F | 57°F | 4.3" |
| June | 57°F | 77°F | 66°F | 5.2" |
| July | 64°F | 83°F | 72°F | 4.4" |
| August | 62°F | 81°F | 70°F | 4.4" |
| September | 56°F | 74°F | 64°F | 3.7" |
| October | 45°F | 63°F | 53°F | 7.1" |
| November | 35°F | 52°F | 43°F | 4.1" |
| December | 26°F | 41°F | 33°F | 5.9" |
| Index | Holbrook | Massachusetts | National |
| Air quality index | 43 | 40 | 42 |
| Pollution index | 24,018,000 | 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 | 0.030% |
| Benzene | 0.220% |
| Carbon Tetrachloride | 0.100% |
| Lead | 0.280% |
| Mercury | 0.130% |
| City | Population | Air Quality Index | National Avg. |
| Brookline, MA | 59,223 | 43 | 14.0% |
| Hull, MA | 10,478 | 43 | 14.0% |
| Newton, MA | 88,322 | 43 | 14.0% |
| Randolph, MA | 33,526 | 43 | 14.0% |
| Walpole, MA | 6,211 | 43 | 14.0% |
| Holbrook, MA | 11,051 | 43 | 14.0% |
| City | Population | Air Quality Index | National Avg. |
| Munhall, PA | 11,049 | 56 | 12.0% |
| Lanham, MD | 11,054 | 47 | 6.0% |
| Franklin Lakes, NJ | 11,044 | 51 | 2.0% |
| Plano, IL | 11,058 | 0 | 100.0% |
| Spencer, IA | 11,038 | 35 | 30.0% |
| Holbrook, MA | 11,051 | 43 | 14.0% |
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