| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 14°F | 28°F | 21°F | 2.0" |
| February | 16°F | 30°F | 22°F | 2.0" |
| March | 29°F | 46°F | 36°F | 4.7" |
| April | 40°F | 59°F | 48°F | 6.8" |
| May | 51°F | 71°F | 60°F | 2.8" |
| June | 60°F | 79°F | 69°F | 8.7" |
| July | 63°F | 82°F | 72°F | 8.6" |
| August | 62°F | 80°F | 71°F | 3.3" |
| September | 54°F | 74°F | 63°F | 1.7" |
| October | 43°F | 61°F | 51°F | 4.1" |
| November | 32°F | 47°F | 39°F | 2.2" |
| December | 20°F | 32°F | 26°F | 2.0" |
| Index | Highland | Wisconsin | National |
| Air quality index | 29 | 69 | 42 |
| Pollution index | 966,594 | 2,842,418 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 304 |
| Days with moderate air quality | 60 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.000% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Rewey, WI | 279 | 29 | 42.0% |
| Mineral Point, WI | 2,631 | 29 | 42.0% |
| Livingston, WI | 531 | 29 | 42.0% |
| Cobb, WI | 418 | 29 | 42.0% |
| Fennimore, WI | 2,495 | 29 | 42.0% |
| Highland, WI | 962 | 29 | 42.0% |
| City | Population | Air Quality Index | National Avg. |
| Sully, IA | 962 | 39 | 22.0% |
| Anacoco, LA | 962 | 30 | 40.0% |
| Cotton Valley, LA | 962 | 39 | 22.0% |
| Alanson, MI | 962 | 36 | 28.0% |
| Clarkfield, MN | 962 | 32 | 36.0% |
| Highland, WI | 962 | 29 | 42.0% |
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