| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 16°F | 35°F | 26°F | 1.7" |
| February | 16°F | 37°F | 26°F | 1.5" |
| March | 24°F | 47°F | 35°F | 2.3" |
| April | 34°F | 61°F | 47°F | 2.9" |
| May | 44°F | 72°F | 58°F | 2.9" |
| June | 54°F | 80°F | 67°F | 4.0" |
| July | 58°F | 84°F | 71°F | 3.2" |
| August | 56°F | 82°F | 68°F | 4.3" |
| September | 49°F | 75°F | 62°F | 3.3" |
| October | 40°F | 63°F | 51°F | 3.9" |
| November | 29°F | 51°F | 40°F | 2.0" |
| December | 23°F | 40°F | 31°F | 2.2" |
| Index | Addison | 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. |
| Gang Mills, NY | 4,723 | 35 | 30.0% |
| Savona, NY | 751 | 35 | 30.0% |
| Tioga, PA | 702 | 35 | 30.0% |
| Painted Post, NY | 1,700 | 35 | 30.0% |
| Knoxville, PA | 773 | 35 | 30.0% |
| Addison, NY | 1,879 | 35 | 30.0% |
| City | Population | Air Quality Index | National Avg. |
| Kersey, CO | 1,879 | 45 | 10.0% |
| Southport, IN | 1,879 | 54 | 8.0% |
| Freeport, ME | 1,879 | 40 | 20.0% |
| Ellaville, GA | 1,880 | 39 | 22.0% |
| Durant, IA | 1,878 | 32 | 36.0% |
| Addison, NY | 1,879 | 35 | 30.0% |
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