| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 8°F | 24°F | 16°F | 0.9" |
| February | 10°F | 27°F | 18°F | 0.7" |
| March | 22°F | 41°F | 31°F | 1.7" |
| April | 34°F | 56°F | 45°F | 3.3" |
| May | 46°F | 69°F | 56°F | 3.8" |
| June | 56°F | 78°F | 66°F | 4.7" |
| July | 60°F | 82°F | 71°F | 4.3" |
| August | 58°F | 79°F | 68°F | 4.5" |
| September | 50°F | 72°F | 60°F | 3.8" |
| October | 39°F | 57°F | 47°F | 3.4" |
| November | 27°F | 43°F | 35°F | 1.5" |
| December | 14°F | 28°F | 20°F | 1.9" |
| Index | Hatley | Wisconsin | National |
| Air quality index | 34 | 69 | 42 |
| Pollution index | 1,286,800 | 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 | 0.000% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Aniwa, WI | 217 | 34 | 32.0% |
| Wittenberg, WI | 948 | 34 | 32.0% |
| Rothschild, WI | 5,286 | 34 | 32.0% |
| Birnamwood, WI | 774 | 34 | 32.0% |
| Mattoon, WI | 411 | 34 | 32.0% |
| Hatley, WI | 557 | 34 | 32.0% |
| City | Population | Air Quality Index | National Avg. |
| Aniak, AK | 557 | 31 | 38.0% |
| Batavia, IA | 557 | 29 | 42.0% |
| Audubon, MN | 557 | 33 | 34.0% |
| Branson West, MO | 557 | 18 | 64.0% |
| Tannersville, NY | 557 | 36 | 28.0% |
| Hatley, WI | 557 | 34 | 32.0% |
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