| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 6°F | 25°F | 15°F | 1.9" |
| February | 11°F | 30°F | 20°F | 0.6" |
| March | 22°F | 44°F | 32°F | 3.2" |
| April | 34°F | 57°F | 44°F | 5.0" |
| May | 45°F | 72°F | 58°F | 3.2" |
| June | 56°F | 81°F | 68°F | 5.3" |
| July | 59°F | 85°F | 71°F | 7.2" |
| August | 57°F | 82°F | 69°F | 6.8" |
| September | 47°F | 74°F | 59°F | 3.5" |
| October | 37°F | 61°F | 48°F | 4.7" |
| November | 27°F | 47°F | 36°F | 2.5" |
| December | 12°F | 30°F | 20°F | 1.3" |
| Index | Hancock | Wisconsin | National |
| Air quality index | 35 | 69 | 42 |
| Pollution index | 2,747,410 | 2,842,418 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 311 |
| Days with moderate air quality | 53 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.005% |
| Benzene | 0.060% |
| Carbon Tetrachloride | 0.003% |
| Lead | 0.003% |
| Mercury | 0.004% |
| City | Population | Air Quality Index | National Avg. |
| Almond, WI | 462 | 34 | 32.0% |
| Bancroft, WI | 540 | 34 | 32.0% |
| Plainfield, WI | 981 | 34 | 32.0% |
| Wautoma, WI | 2,028 | 35 | 30.0% |
| Friendship, WI | 653 | 35 | 30.0% |
| Hancock, WI | 395 | 35 | 30.0% |
| City | Population | Air Quality Index | National Avg. |
| Lucas, KS | 395 | 32 | 36.0% |
| Port Vincent, LA | 395 | 45 | 10.0% |
| Golden, MO | 395 | 18 | 64.0% |
| McCord Bend, MO | 395 | 18 | 64.0% |
| Fromberg, MT | 395 | 21 | 58.0% |
| Hancock, WI | 395 | 35 | 30.0% |
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