| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 44°F | 65°F | 53°F | n/a |
| February | 48°F | 75°F | 60°F | n/a |
| March | 53°F | 81°F | 67°F | n/a |
| April | 55°F | 85°F | 70°F | n/a |
| May | 63°F | 90°F | 77°F | n/a |
| June | 76°F | 105°F | 91°F | n/a |
| July | 81°F | 103°F | 92°F | n/a |
| August | 80°F | 102°F | 90°F | n/a |
| September | 73°F | 97°F | 84°F | n/a |
| October | 63°F | 88°F | 75°F | n/a |
| November | 52°F | 77°F | 64°F | n/a |
| December | 42°F | 66°F | 53°F | n/a |
| Index | Winkelman | Arizona | National |
| Air quality index | 47 | 57 | 42 |
| Pollution index | 3,235,590 | 9,766,019 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 225 |
| Days with moderate air quality | 138 |
| Days w/ poor A.Q. for sensitive groups | 2 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.070% |
| Benzene | 0.050% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.050% |
| Mercury | 0.050% |
| City | Population | Air Quality Index | National Avg. |
| Hayden, AZ | 478 | 47 | 6.0% |
| Kearny, AZ | 2,490 | 47 | 6.0% |
| Dripping Springs, AZ | 244 | 47 | 6.0% |
| Dudleyville, AZ | 788 | 47 | 6.0% |
| Winkelman, AZ | 351 | 47 | 6.0% |
| City | Population | Air Quality Index | National Avg. |
| Clacks Canyon, AZ | 351 | 13 | 74.0% |
| Lohrville, IA | 351 | 37 | 26.0% |
| Persia, IA | 351 | 40 | 20.0% |
| Towanda, IL | 351 | 44 | 12.0% |
| Moline, KS | 351 | 40 | 20.0% |
| Winkelman, AZ | 351 | 47 | 6.0% |