| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 5°F | 22°F | 14°F | 0.2" |
| February | 5°F | 25°F | 15°F | 0.8" |
| March | 18°F | 39°F | 28°F | 2.3" |
| April | 31°F | 53°F | 41°F | 2.0" |
| May | 42°F | 66°F | 53°F | 3.1" |
| June | 52°F | 74°F | 62°F | 5.0" |
| July | 55°F | 79°F | 67°F | 3.0" |
| August | 53°F | 76°F | 64°F | 4.0" |
| September | 46°F | 69°F | 57°F | 2.7" |
| October | 35°F | 55°F | 45°F | 2.2" |
| November | 24°F | 41°F | 32°F | 1.0" |
| December | 11°F | 26°F | 19°F | 0.7" |
| Index | Summit Lake | Wisconsin | National |
| Air quality index | 34 | 69 | 42 |
| Pollution index | 1,955,360 | 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 | 0.001% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.002% |
| Mercury | 0.002% |
| City | Population | Air Quality Index | National Avg. |
| Elcho, WI | 265 | 34 | 32.0% |
| Crandon, WI | 1,735 | 34 | 32.0% |
| Mole Lake, WI | 527 | 34 | 32.0% |
| Post Lake, WI | 255 | 34 | 32.0% |
| Summit Lake, WI | 73 | 34 | 32.0% |
| City | Population | Air Quality Index | National Avg. |
| Spruce Pine, AL | 73 | 37 | 26.0% |
| McCaskill, AR | 73 | 32 | 36.0% |
| Lindcove, CA | 73 | 66 | 32.0% |
| Sattley, CA | 73 | 44 | 12.0% |
| Paoli, CO | 73 | 19 | 62.0% |
| Summit Lake, WI | 73 | 34 | 32.0% |
Here are the best places to live in Wisconsin
Check out the 10 safest cities in Wisconsin
Top 10 cities in Wisconsin with the best education system
These are the 10 most affordable cities in Wisconsin