| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 4°F | 22°F | 11°F | 1.2" |
| February | 3°F | 21°F | 10°F | 0.3" |
| March | 22°F | 38°F | 29°F | 1.3" |
| April | 36°F | 57°F | 45°F | 6.8" |
| May | 47°F | 70°F | 57°F | 0.7" |
| June | 57°F | 78°F | 66°F | 5.5" |
| July | 62°F | 83°F | 72°F | 1.2" |
| August | 59°F | 80°F | 68°F | 2.1" |
| September | 51°F | 73°F | 61°F | 5.5" |
| October | 37°F | 55°F | 45°F | 0.9" |
| November | 26°F | 43°F | 33°F | 2.0" |
| December | 6°F | 23°F | 14°F | 0.1" |
| Index | Clitherall | Minnesota | National |
| Air quality index | 29 | 35 | 42 |
| Pollution index | 1,462,220 | 1,854,519 | 2,726,193 |
| Measurement | Total |
| Days measured | 359 |
| Days with good air quality | 328 |
| Days with moderate air quality | 29 |
| Days w/ poor A.Q. for sensitive groups | 2 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.040% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.040% |
| Mercury | 0.080% |
| City | Population | Air Quality Index | National Avg. |
| Millerville, MN | 106 | 29 | 42.0% |
| Parkers Prairie, MN | 1,119 | 29 | 42.0% |
| Urbank, MN | 52 | 29 | 42.0% |
| Ottertail, MN | 531 | 29 | 42.0% |
| Vining, MN | 41 | 29 | 42.0% |
| Clitherall, MN | 109 | 29 | 42.0% |
| City | Population | Air Quality Index | National Avg. |
| Eagle, AK | 109 | 38 | 24.0% |
| Mud Bay, AK | 109 | 20 | 60.0% |
| Standing Rock, AL | 109 | 42 | 16.0% |
| Kohls Ranch, AZ | 109 | 60 | 20.0% |
| Vilas, CO | 109 | 20 | 60.0% |
| Clitherall, MN | 109 | 29 | 42.0% |
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