| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 12°F | 32°F | 22°F | 3.2" |
| February | 11°F | 34°F | 22°F | 3.6" |
| March | 18°F | 40°F | 29°F | 3.4" |
| April | 33°F | 58°F | 45°F | 3.2" |
| May | 45°F | 72°F | 58°F | 5.3" |
| June | 54°F | 78°F | 66°F | 6.6" |
| July | 59°F | 82°F | 70°F | 6.2" |
| August | 57°F | 81°F | 68°F | 4.3" |
| September | 50°F | 76°F | 62°F | 4.8" |
| October | 41°F | 63°F | 52°F | 5.0" |
| November | 29°F | 49°F | 39°F | 2.7" |
| December | 21°F | 37°F | 29°F | 3.4" |
| Index | Rochester | Vermont | National |
| Air quality index | 36 | 36 | 42 |
| Pollution index | 3,716,800 | 1,478,772 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 322 |
| Days with moderate air quality | 43 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.002% |
| Benzene | 0.040% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.030% |
| Mercury | 0.004% |
| City | Population | Air Quality Index | National Avg. |
| South Royalton, VT | 609 | 34 | 32.0% |
| Pittsford, VT | 554 | 36 | 28.0% |
| Randolph, VT | 2,044 | 36 | 28.0% |
| Bethel, VT | 891 | 36 | 28.0% |
| Brandon, VT | 1,552 | 36 | 28.0% |
| Rochester, VT | 247 | 36 | 28.0% |
| City | Population | Air Quality Index | National Avg. |
| Moose Pass, AK | 247 | 31 | 38.0% |
| Sunizona, AZ | 247 | 45 | 10.0% |
| Norwood, GA | 247 | 47 | 6.0% |
| Dundee, IA | 247 | 39 | 22.0% |
| Easton, KS | 247 | 43 | 14.0% |
| Rochester, VT | 247 | 36 | 28.0% |
Here are the best places to live in Vermont
Check out the 10 safest cities in Vermont
These are the largest cities in Vermont
See the best places to live in Rochester