| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 34°F | 54°F | 43°F | 2.2" |
| February | 34°F | 55°F | 43°F | 1.8" |
| March | 41°F | 65°F | 52°F | 4.2" |
| April | 51°F | 73°F | 61°F | 4.4" |
| May | 57°F | 79°F | 68°F | 2.5" |
| June | 67°F | 88°F | 77°F | 4.0" |
| July | 70°F | 90°F | 79°F | 5.5" |
| August | 70°F | 91°F | 80°F | 1.5" |
| September | 63°F | 83°F | 72°F | 3.8" |
| October | 52°F | 73°F | 62°F | 3.9" |
| November | 42°F | 62°F | 51°F | 3.6" |
| December | 39°F | 59°F | 48°F | 3.8" |
| Index | Weldon | 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. |
| South Rosemary, NC | 2,831 | 36 | 28.0% |
| Gasburg, VA | 508 | 36 | 28.0% |
| South Weldon, NC | 827 | 36 | 28.0% |
| Garysburg, NC | 859 | 36 | 28.0% |
| Gaston, NC | 1,290 | 36 | 28.0% |
| Weldon, NC | 1,668 | 36 | 28.0% |
| City | Population | Air Quality Index | National Avg. |
| Spring Valley, AZ | 1,668 | 43 | 14.0% |
| Wakefield, MI | 1,669 | 8 | 84.0% |
| Monte Alto, TX | 1,667 | 42 | 16.0% |
| La Guadeloupe, QC | 1,669 | n/a | |
| Saint-Albert, QC | 1,669 | n/a | |
| Weldon, NC | 1,668 | 36 | 28.0% |
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