| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 10°F | 26°F | 17°F | 0.5" |
| February | 14°F | 29°F | 20°F | 1.2" |
| March | 27°F | 45°F | 34°F | 5.9" |
| April | 38°F | 60°F | 48°F | 2.5" |
| May | 51°F | 73°F | 60°F | 9.7" |
| June | 61°F | 83°F | 71°F | 2.4" |
| July | 63°F | 84°F | 73°F | 1.2" |
| August | 60°F | 81°F | 69°F | 5.9" |
| September | 54°F | 79°F | 64°F | 2.5" |
| October | 43°F | 64°F | 52°F | 4.8" |
| November | 28°F | 48°F | 36°F | 2.8" |
| December | 10°F | 25°F | 17°F | 0.5" |
| Index | Ormsby | Minnesota | National |
| Air quality index | 32 | 35 | 42 |
| Pollution index | 568,450 | 1,854,519 | 2,726,193 |
| Measurement | Total |
| Days measured | 362 |
| Days with good air quality | 327 |
| Days with moderate air quality | 35 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.020% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.002% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Welcome, MN | 848 | 15 | 70.0% |
| Fairmont, MN | 10,042 | 15 | 70.0% |
| Northrop, MN | 193 | 15 | 70.0% |
| Truman, MN | 1,083 | 15 | 70.0% |
| Butterfield, MN | 558 | 32 | 36.0% |
| Ormsby, MN | 106 | 32 | 36.0% |
| City | Population | Air Quality Index | National Avg. |
| Franklin CDP (Sacramento County), CA | 106 | 48 | 4.0% |
| Vona, CO | 106 | 45 | 10.0% |
| Arion, IA | 106 | 40 | 20.0% |
| Carpenter, IA | 106 | 15 | 70.0% |
| Popejoy, IA | 106 | 15 | 70.0% |
| Ormsby, MN | 106 | 32 | 36.0% |
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