| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 18°F | 34°F | 26°F | 2.4" |
| February | 15°F | 32°F | 23°F | 1.6" |
| March | 25°F | 44°F | 34°F | 3.0" |
| April | 35°F | 57°F | 45°F | 6.7" |
| May | 44°F | 69°F | 56°F | 1.3" |
| June | 60°F | 82°F | 70°F | 4.1" |
| July | 60°F | 80°F | 70°F | 0.0" |
| August | 62°F | 83°F | 72°F | 9.5" |
| September | 56°F | 77°F | 65°F | 3.8" |
| October | 46°F | 64°F | 55°F | 3.1" |
| November | 33°F | 50°F | 41°F | 4.0" |
| December | 22°F | 35°F | 29°F | 0.0" |
| Index | Prattsburgh | New York | National |
| Air quality index | 35 | 43 | 42 |
| Pollution index | 2,885,140 | 6,179,275 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 349 |
| Days with moderate air quality | 16 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.004% |
| Benzene | 0.030% |
| Carbon Tetrachloride | 0.005% |
| Lead | 0.010% |
| Mercury | 0.002% |
| City | Population | Air Quality Index | National Avg. |
| Penn Yan, NY | 5,223 | 34 | 32.0% |
| Hammondsport, NY | 633 | 35 | 30.0% |
| Bath, NY | 5,662 | 35 | 30.0% |
| Cohocton, NY | 1,093 | 35 | 30.0% |
| Keuka Park, NY | 1,133 | 35 | 30.0% |
| Prattsburgh, NY | 784 | 35 | 30.0% |
| City | Population | Air Quality Index | National Avg. |
| Ballard, CA | 784 | 44 | 12.0% |
| Grand View Estates, CO | 784 | 58 | 16.0% |
| Palmona Park, FL | 784 | 36 | 28.0% |
| Boswell, IN | 784 | 42 | 16.0% |
| Wickliffe, KY | 784 | 44 | 12.0% |
| Prattsburgh, NY | 784 | 35 | 30.0% |