| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 6°F | 23°F | 14°F | 1.2" |
| February | 8°F | 27°F | 17°F | 1.0" |
| March | 22°F | 42°F | 31°F | 2.4" |
| April | 34°F | 56°F | 44°F | 3.9" |
| May | 45°F | 69°F | 56°F | 7.5" |
| June | 54°F | 77°F | 65°F | 5.5" |
| July | 59°F | 82°F | 70°F | 6.6" |
| August | 57°F | 79°F | 67°F | 8.4" |
| September | 50°F | 72°F | 60°F | 5.7" |
| October | 38°F | 57°F | 47°F | 6.0" |
| November | 26°F | 43°F | 34°F | 2.3" |
| December | 12°F | 26°F | 19°F | 1.8" |
| Index | Henriette | Minnesota | National |
| Air quality index | 32 | 35 | 42 |
| Pollution index | 1,318,690 | 1,854,519 | 2,726,193 |
| Measurement | Total |
| Days measured | 344 |
| Days with good air quality | 313 |
| Days with moderate air quality | 31 |
| 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 | 0.000% |
| Lead | 0.000% |
| Mercury | 0.004% |
| City | Population | Air Quality Index | National Avg. |
| Hinckley, MN | 1,499 | 29 | 42.0% |
| Braham, MN | 1,721 | 32 | 36.0% |
| Ogilvie, MN | 463 | 32 | 36.0% |
| Pine City, MN | 3,113 | 32 | 36.0% |
| Grasston, MN | 156 | 32 | 36.0% |
| Henriette, MN | 59 | 32 | 36.0% |
| City | Population | Air Quality Index | National Avg. |
| Hatton, AL | 59 | 37 | 26.0% |
| Smithville, AR | 59 | 45 | 10.0% |
| Campo Bonito, AZ | 59 | 47 | 6.0% |
| Lee Vining, CA | 59 | 47 | 6.0% |
| Paskenta, CA | 59 | 41 | 18.0% |
| Henriette, MN | 59 | 32 | 36.0% |
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