| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 31°F | 51°F | 40°F | 0.4" |
| February | 32°F | 53°F | 41°F | 0.2" |
| March | 39°F | 62°F | 50°F | 0.3" |
| April | 49°F | 73°F | 60°F | 0.2" |
| May | 59°F | 81°F | 69°F | 0.5" |
| June | 65°F | 87°F | 76°F | 0.3" |
| July | 69°F | 91°F | 79°F | 0.3" |
| August | 68°F | 87°F | 76°F | 0.2" |
| September | 60°F | 81°F | 69°F | 0.4" |
| October | 49°F | 72°F | 59°F | 0.3" |
| November | 39°F | 62°F | 49°F | 0.4" |
| December | 35°F | 55°F | 43°F | 0.2" |
| Index | Halifax | North Carolina | National |
| Air quality index | 36 | 35 | 42 |
| Pollution index | 1,869,560 | 2,789,538 | 2,726,193 |
| Measurement | Total |
| Days measured | 363 |
| Days with good air quality | 325 |
| Days with moderate air quality | 38 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.160% |
| Benzene | 0.030% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.180% |
| Mercury | 0.010% |
| City | Population | Air Quality Index | National Avg. |
| Enfield, NC | 2,348 | 36 | 28.0% |
| South Weldon, NC | 827 | 36 | 28.0% |
| Seaboard, NC | 743 | 36 | 28.0% |
| Gaston, NC | 1,290 | 36 | 28.0% |
| Weldon, NC | 1,668 | 36 | 28.0% |
| Halifax, NC | 240 | 36 | 28.0% |
| City | Population | Air Quality Index | National Avg. |
| Hickory Ridge, AR | 240 | 45 | 10.0% |
| Ardentown, DE | 240 | 51 | 2.0% |
| East Gillespie, IL | 240 | 54 | 8.0% |
| Kingston Mines, IL | 240 | 41 | 18.0% |
| Ingalls, KS | 240 | 15 | 70.0% |
| Halifax, NC | 240 | 36 | 28.0% |
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