| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 6°F | 22°F | 14°F | 1.5" |
| February | 6°F | 26°F | 15°F | 0.6" |
| March | 17°F | 39°F | 26°F | 0.9" |
| April | 31°F | 55°F | 41°F | 2.7" |
| May | 42°F | 67°F | 54°F | 4.4" |
| June | 53°F | 78°F | 64°F | 5.4" |
| July | 58°F | 81°F | 69°F | 5.6" |
| August | 55°F | 80°F | 67°F | 4.1" |
| September | 48°F | 72°F | 58°F | 4.3" |
| October | 35°F | 57°F | 45°F | 2.6" |
| November | 20°F | 40°F | 29°F | 1.1" |
| December | 9°F | 26°F | 17°F | 0.5" |
| Index | Halliday | North Dakota | National |
| Air quality index | 33 | 35 | 42 |
| Pollution index | 212,213 | 1,038,665 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 354 |
| Days with moderate air quality | 11 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.003% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Dodge, ND | 107 | 33 | 34.0% |
| Dunn Center, ND | 485 | 33 | 34.0% |
| Golden Valley, ND | 214 | 33 | 34.0% |
| Halliday, ND | 348 | 33 | 34.0% |
| City | Population | Air Quality Index | National Avg. |
| Donaldson, AR | 348 | 32 | 36.0% |
| Okolona, AR | 348 | 32 | 36.0% |
| Trinidad, CA | 348 | 27 | 46.0% |
| Buckner, IL | 348 | 43 | 14.0% |
| Snow Lake Shores, MS | 348 | 45 | 10.0% |
| Halliday, ND | 348 | 33 | 34.0% |
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