| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 17°F | 32°F | 24°F | 4.1" |
| February | 14°F | 28°F | 20°F | 1.7" |
| March | 21°F | 38°F | 28°F | 2.3" |
| April | 34°F | 54°F | 43°F | 3.8" |
| May | 44°F | 67°F | 55°F | 1.7" |
| June | 56°F | 78°F | 67°F | 5.2" |
| July | 58°F | 79°F | 68°F | 4.2" |
| August | 59°F | 81°F | 69°F | 9.4" |
| September | 52°F | 74°F | 62°F | 5.5" |
| October | 46°F | 62°F | 53°F | 5.2" |
| November | 32°F | 48°F | 39°F | 5.5" |
| December | 21°F | 32°F | 26°F | 3.0" |
| Index | Houghton | New York | National |
| Air quality index | 39 | 43 | 42 |
| Pollution index | 2,885,140 | 6,179,275 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 308 |
| Days with moderate air quality | 57 |
| 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. |
| Angelica, NY | 738 | 35 | 30.0% |
| Belmont, NY | 829 | 35 | 30.0% |
| Castile, NY | 986 | 37 | 26.0% |
| Dalton, NY | 459 | 37 | 26.0% |
| Hunt, NY | 125 | 37 | 26.0% |
| Houghton, NY | 1,741 | 39 | 22.0% |
| City | Population | Air Quality Index | National Avg. |
| Princeville, IL | 1,741 | 41 | 18.0% |
| Bernice, LA | 1,741 | 35 | 30.0% |
| Watertown, TN | 1,741 | 25 | 50.0% |
| Unionville, GA | 1,742 | 26 | 48.0% |
| Sesser, IL | 1,742 | 43 | 14.0% |
| Houghton, NY | 1,741 | 39 | 22.0% |