| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 18°F | 36°F | 27°F | 1.5" |
| February | 18°F | 36°F | 27°F | 1.2" |
| March | 26°F | 47°F | 35°F | 1.8" |
| April | 37°F | 62°F | 48°F | 2.4" |
| May | 47°F | 73°F | 60°F | 2.9" |
| June | 57°F | 81°F | 68°F | 3.5" |
| July | 61°F | 84°F | 72°F | 4.0" |
| August | 59°F | 82°F | 70°F | 3.9" |
| September | 53°F | 76°F | 64°F | 2.6" |
| October | 43°F | 64°F | 53°F | 3.7" |
| November | 33°F | 53°F | 42°F | 2.0" |
| December | 25°F | 41°F | 33°F | 2.0" |
| Index | Wyoming | New York | National |
| Air quality index | 37 | 43 | 42 |
| Pollution index | 1,117,680 | 6,179,275 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 317 |
| Days with moderate air quality | 48 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.002% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.002% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Mount Morris, NY | 3,152 | 37 | 26.0% |
| Kysorville, NY | 48 | 37 | 26.0% |
| Caledonia, NY | 2,177 | 37 | 26.0% |
| Greigsville, NY | 349 | 37 | 26.0% |
| Pavilion, NY | 672 | 37 | 26.0% |
| Wyoming, NY | 376 | 37 | 26.0% |
| City | Population | Air Quality Index | National Avg. |
| Stapleton, GA | 376 | 47 | 6.0% |
| McFarland, KS | 376 | 32 | 36.0% |
| Accident, MD | 376 | 36 | 28.0% |
| North Carrollton, MS | 376 | 33 | 34.0% |
| Neche, ND | 376 | 33 | 34.0% |
| Wyoming, NY | 376 | 37 | 26.0% |