| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 10°F | 25°F | 17°F | 1.7" |
| February | 12°F | 27°F | 19°F | 2.0" |
| March | 25°F | 44°F | 34°F | 3.8" |
| April | 38°F | 60°F | 48°F | 4.3" |
| May | 50°F | 70°F | 59°F | 4.7" |
| June | 61°F | 82°F | 72°F | 7.0" |
| July | 64°F | 86°F | 75°F | 4.5" |
| August | 60°F | 81°F | 71°F | 5.6" |
| September | 55°F | 76°F | 64°F | 12.2" |
| October | 43°F | 62°F | 52°F | 5.4" |
| November | 27°F | 44°F | 35°F | 2.0" |
| December | 11°F | 24°F | 18°F | 1.6" |
| Index | Medina | Minnesota | National |
| Air quality index | 46 | 35 | 42 |
| Pollution index | 166,775 | 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 | 0.000% |
| Benzene | 0.002% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Buffalo, MN | 16,770 | 32 | 36.0% |
| Bloomington, MN | 87,234 | 46 | 8.0% |
| Delano, MN | 6,392 | 46 | 8.0% |
| Maple Plain, MN | 1,797 | 46 | 8.0% |
| Orono, MN | 8,455 | 46 | 8.0% |
| Medina, MN | 6,711 | 46 | 8.0% |
| City | Population | Air Quality Index | National Avg. |
| Pollock Pines, CA | 6,711 | 44 | 12.0% |
| Hillsboro, OH | 6,714 | 43 | 14.0% |
| Geneseo, IL | 6,706 | 46 | 8.0% |
| Santa Teresa, NM | 6,706 | 53 | 6.0% |
| Boonville, IN | 6,716 | 45 | 10.0% |
| Medina, MN | 6,711 | 46 | 8.0% |