| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 5°F | 21°F | 13°F | 1.3" |
| February | 4°F | 24°F | 13°F | 0.7" |
| March | 17°F | 39°F | 26°F | 1.6" |
| April | 28°F | 54°F | 40°F | 1.7" |
| May | 43°F | 68°F | 54°F | 3.7" |
| June | 51°F | 75°F | 62°F | 4.2" |
| July | 56°F | 81°F | 68°F | 2.4" |
| August | 53°F | 81°F | 66°F | 4.5" |
| September | 45°F | 72°F | 57°F | 3.8" |
| October | 33°F | 55°F | 42°F | 2.6" |
| November | 19°F | 38°F | 27°F | 1.3" |
| December | 5°F | 22°F | 13°F | 0.6" |
| Index | Tioga | North Dakota | National |
| Air quality index | 34 | 35 | 42 |
| Pollution index | 563,599 | 1,038,665 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 309 |
| Days with moderate air quality | 53 |
| Days w/ poor A.Q. for sensitive groups | 3 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.010% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Powers Lake, ND | 313 | 34 | 32.0% |
| Ray, ND | 589 | 34 | 32.0% |
| White Earth, ND | 83 | 34 | 32.0% |
| Tioga, ND | 975 | 34 | 32.0% |
| City | Population | Air Quality Index | National Avg. |
| Chatom, AL | 975 | 42 | 16.0% |
| Cripple Creek, CO | 975 | 16 | 68.0% |
| Grimsley, TN | 975 | 25 | 50.0% |
| Vega, TX | 975 | 44 | 12.0% |
| Entiat, WA | 975 | 24 | 52.0% |
| Tioga, ND | 975 | 34 | 32.0% |
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