| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 8°F | 25°F | 16°F | 0.6" |
| February | 9°F | 28°F | 18°F | 0.4" |
| March | 22°F | 42°F | 31°F | 1.2" |
| April | 33°F | 56°F | 44°F | 2.2" |
| May | 45°F | 69°F | 56°F | 3.2" |
| June | 54°F | 77°F | 65°F | 5.0" |
| July | 58°F | 82°F | 70°F | 3.1" |
| August | 57°F | 79°F | 67°F | 4.4" |
| September | 48°F | 71°F | 59°F | 3.5" |
| October | 38°F | 57°F | 47°F | 2.7" |
| November | 26°F | 43°F | 34°F | 1.4" |
| December | 14°F | 28°F | 21°F | 1.6" |
| Index | Junction City | Wisconsin | National |
| Air quality index | 34 | 69 | 42 |
| Pollution index | 5,835,720 | 2,842,418 | 2,726,193 |
| Measurement | Total |
| Days measured | 205 |
| Days with good air quality | 196 |
| Days with moderate air quality | 9 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 1.890% |
| Lead | 0.010% |
| Mercury | 0.490% |
| City | Population | Air Quality Index | National Avg. |
| Stratford, WI | 1,510 | 34 | 32.0% |
| Plover, WI | 13,243 | 34 | 32.0% |
| Whiting, WI | 1,572 | 34 | 32.0% |
| Biron, WI | 978 | 34 | 32.0% |
| Rudolph, WI | 484 | 34 | 32.0% |
| Junction City, WI | 429 | 34 | 32.0% |
| City | Population | Air Quality Index | National Avg. |
| Kasigluk, AK | 429 | 31 | 38.0% |
| Rosston, AR | 429 | 32 | 36.0% |
| June Lake, CA | 429 | 47 | 6.0% |
| River Pines, CA | 429 | 52 | 4.0% |
| San Lucas, CA | 429 | 37 | 26.0% |
| Junction City, WI | 429 | 34 | 32.0% |