| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 12°F | 27°F | 19°F | 0.4" |
| February | 13°F | 30°F | 21°F | 0.5" |
| March | 28°F | 45°F | 35°F | 1.5" |
| April | 39°F | 59°F | 48°F | 3.6" |
| May | 49°F | 71°F | 59°F | 3.7" |
| June | 60°F | 80°F | 69°F | 4.4" |
| July | 64°F | 84°F | 73°F | 3.6" |
| August | 62°F | 81°F | 70°F | 3.4" |
| September | 54°F | 74°F | 63°F | 2.4" |
| October | 42°F | 60°F | 50°F | 2.5" |
| November | 31°F | 46°F | 38°F | 0.9" |
| December | 18°F | 31°F | 24°F | 1.3" |
| Index | Homer | Minnesota | National |
| Air quality index | 15 | 35 | 42 |
| Pollution index | 2,696,550 | 1,854,519 | 2,726,193 |
| Measurement | Total |
| Days measured | 57 |
| Days with good air quality | 53 |
| Days with moderate air quality | 4 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.003% |
| Benzene | 0.050% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.001% |
| Mercury | 0.003% |
| City | Population | Air Quality Index | National Avg. |
| Galesville, WI | 1,628 | 15 | 70.0% |
| Rollingstone, MN | 651 | 15 | 70.0% |
| Winona, MN | 26,772 | 15 | 70.0% |
| Rushford, MN | 1,774 | 15 | 70.0% |
| Dodge, WI | 141 | 15 | 70.0% |
| Homer, MN | 176 | 15 | 70.0% |
| City | Population | Air Quality Index | National Avg. |
| Glacier View, AK | 176 | 31 | 38.0% |
| Point Lay, AK | 176 | 38 | 24.0% |
| Alpine, AZ | 176 | 44 | 12.0% |
| Little River, CA | 176 | 33 | 34.0% |
| San Geronimo, CA | 176 | 40 | 20.0% |
| Homer, MN | 176 | 15 | 70.0% |
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