| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 8°F | 24°F | 16°F | 1.1" |
| February | 10°F | 28°F | 18°F | 2.5" |
| March | 25°F | 42°F | 33°F | 3.5" |
| April | 37°F | 58°F | 47°F | 4.5" |
| May | 48°F | 71°F | 59°F | 7.9" |
| June | 59°F | 80°F | 68°F | 6.7" |
| July | 63°F | 84°F | 73°F | 5.2" |
| August | 60°F | 81°F | 70°F | 6.5" |
| September | 53°F | 74°F | 62°F | 4.2" |
| October | 40°F | 60°F | 49°F | 4.5" |
| November | 27°F | 45°F | 35°F | 3.2" |
| December | 13°F | 28°F | 20°F | 2.0" |
| Index | Winsted | Minnesota | National |
| Air quality index | 46 | 35 | 42 |
| Pollution index | 2,322,880 | 1,854,519 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 214 |
| Days with moderate air quality | 148 |
| Days w/ poor A.Q. for sensitive groups | 2 |
| Days with unhealthy air quality | 1 |
| Pollutant | Total |
| Arsenic | 0.040% |
| Benzene | 0.030% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.360% |
| Mercury | 0.290% |
| City | Population | Air Quality Index | National Avg. |
| Biscay, MN | 213 | 32 | 36.0% |
| Cokato, MN | 2,726 | 32 | 36.0% |
| Waverly, MN | 1,513 | 32 | 36.0% |
| Howard Lake, MN | 1,897 | 32 | 36.0% |
| Dassel, MN | 1,443 | 32 | 36.0% |
| Winsted, MN | 2,036 | 46 | 8.0% |
| City | Population | Air Quality Index | National Avg. |
| Ellijay, GA | 2,036 | 43 | 14.0% |
| Clio, MI | 2,036 | 38 | 24.0% |
| Oakes, ND | 2,036 | 20 | 60.0% |
| Erma, NJ | 2,036 | 40 | 20.0% |
| Conneaut Lakeshore, PA | 2,036 | 34 | 32.0% |
| Winsted, MN | 2,036 | 46 | 8.0% |
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