| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 18°F | 35°F | 26°F | 3.6" |
| February | 17°F | 33°F | 24°F | 1.3" |
| March | 20°F | 39°F | 30°F | 2.4" |
| April | 35°F | 60°F | 47°F | 5.3" |
| May | 44°F | 67°F | 55°F | 3.1" |
| June | 58°F | 79°F | 68°F | 7.7" |
| July | 63°F | 83°F | 72°F | 5.6" |
| August | 59°F | 80°F | 69°F | 6.2" |
| September | 51°F | 72°F | 61°F | 2.1" |
| October | 41°F | 58°F | 48°F | 5.9" |
| November | 34°F | 51°F | 42°F | 4.8" |
| December | 23°F | 36°F | 30°F | 2.8" |
| Index | Hamilton | New York | National |
| Air quality index | 27 | 43 | 42 |
| Pollution index | 1,654,400 | 6,179,275 | 2,726,193 |
| Measurement | Total |
| Days measured | 359 |
| Days with good air quality | 349 |
| Days with moderate air quality | 10 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.002% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.003% |
| Lead | 0.004% |
| Mercury | 0.002% |
| City | Population | Air Quality Index | National Avg. |
| New Berlin, NY | 968 | 27 | 46.0% |
| Madison, NY | 457 | 27 | 46.0% |
| Waterville, NY | 1,672 | 27 | 46.0% |
| Earlville, NY | 855 | 27 | 46.0% |
| Morrisville, NY | 2,081 | 27 | 46.0% |
| Hamilton, NY | 3,649 | 27 | 46.0% |
| City | Population | Air Quality Index | National Avg. |
| Casselman, ON | 3,649 | n/a | |
| Melrose, MN | 3,651 | 32 | 36.0% |
| Mono Vista, CA | 3,646 | 39 | 22.0% |
| Vandenberg AFB, CA | 3,646 | 46 | 8.0% |
| Blythewood, SC | 3,646 | 43 | 14.0% |
| Hamilton, NY | 3,649 | 27 | 46.0% |
Here are the best places to live in New York
Top 10 cities in New York with the best education system
10 Best cities in New York for employment
10 best cities to buy a new house in New York