| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 7°F | 24°F | 15°F | 0.8" |
| February | 8°F | 27°F | 17°F | 2.3" |
| March | 23°F | 43°F | 32°F | 2.1" |
| April | 36°F | 57°F | 45°F | 4.7" |
| May | 46°F | 70°F | 57°F | 5.4" |
| June | 56°F | 78°F | 67°F | 5.9" |
| July | 61°F | 83°F | 71°F | 6.7" |
| August | 58°F | 80°F | 68°F | 7.0" |
| September | 51°F | 73°F | 61°F | 4.7" |
| October | 39°F | 58°F | 48°F | 4.8" |
| November | 27°F | 44°F | 35°F | 3.8" |
| December | 13°F | 28°F | 20°F | 2.5" |
| Index | Shafer | Minnesota | National |
| Air quality index | 46 | 35 | 42 |
| Pollution index | 2,108,790 | 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 | 0.003% |
| Benzene | 0.040% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.001% |
| Mercury | 0.003% |
| City | Population | Air Quality Index | National Avg. |
| Harris, MN | 988 | 46 | 8.0% |
| Taylors Falls, MN | 1,166 | 46 | 8.0% |
| St. Croix Falls, WI | 1,863 | 46 | 8.0% |
| Star Prairie, WI | 641 | 46 | 8.0% |
| Marine on St. Croix, MN | 671 | 46 | 8.0% |
| Shafer, MN | 1,155 | 46 | 8.0% |
| City | Population | Air Quality Index | National Avg. |
| North Haverhill, NH | 1,155 | 34 | 32.0% |
| Olcott, NY | 1,155 | 39 | 22.0% |
| Tyndall, SD | 1,155 | 36 | 28.0% |
| Notre-Dame-du-Portage, QC | 1,155 | n/a | |
| Naco, AZ | 1,156 | 45 | 10.0% |
| Shafer, MN | 1,155 | 46 | 8.0% |
Here are the best places to live in Minnesota
These are the largest cities in Minnesota
Check out the 10 most dangerous cities in Minnesota
Most Dangerous Cities In The US