| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 12°F | 32°F | 21°F | 0.5" |
| February | 12°F | 33°F | 21°F | 0.6" |
| March | 23°F | 48°F | 34°F | 0.8" |
| April | 33°F | 59°F | 44°F | 1.8" |
| May | 43°F | 69°F | 55°F | 3.1" |
| June | 53°F | 80°F | 66°F | 3.1" |
| July | 60°F | 90°F | 74°F | 2.0" |
| August | 58°F | 87°F | 71°F | 2.3" |
| September | 49°F | 78°F | 62°F | 1.3" |
| October | 36°F | 61°F | 47°F | 1.0" |
| November | 24°F | 47°F | 34°F | 0.4" |
| December | 11°F | 31°F | 20°F | 0.6" |
| Index | Faith | South Dakota | National |
| Air quality index | 44 | 36 | 42 |
| Pollution index | 95,587 | 345,623 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 274 |
| Days with moderate air quality | 87 |
| Days w/ poor A.Q. for sensitive groups | 4 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.001% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Faith, SD | 276 | 44 | 12.0% |
| City | Population | Air Quality Index | National Avg. |
| Olsburg, KS | 276 | 32 | 36.0% |
| Des Arc, MO | 276 | 54 | 8.0% |
| Henderson Point, MS | 276 | 42 | 16.0% |
| Castalia, NC | 276 | 36 | 28.0% |
| Edmore, ND | 276 | 33 | 34.0% |
| Faith, SD | 276 | 44 | 12.0% |
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