| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 29°F | 55°F | 41°F | 6.5" |
| February | 30°F | 57°F | 42°F | 4.1" |
| March | 36°F | 64°F | 49°F | 5.2" |
| April | 49°F | 77°F | 63°F | 8.1" |
| May | 57°F | 83°F | 70°F | 7.7" |
| June | 66°F | 88°F | 76°F | 8.4" |
| July | 70°F | 90°F | 78°F | 10.9" |
| August | 67°F | 88°F | 76°F | 5.5" |
| September | 62°F | 85°F | 72°F | 4.9" |
| October | 50°F | 76°F | 62°F | 4.0" |
| November | 35°F | 63°F | 47°F | 7.1" |
| December | 35°F | 59°F | 46°F | 7.8" |
| Index | Morven | North Carolina | National |
| Air quality index | 40 | 35 | 42 |
| Pollution index | 691,074 | 2,789,538 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 288 |
| Days with moderate air quality | 77 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.002% |
| Lead | 0.003% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Ellerbe, NC | 1,032 | 29 | 42.0% |
| Chesterfield, SC | 1,486 | 40 | 20.0% |
| Ruby, SC | 304 | 40 | 20.0% |
| Wallace, SC | 713 | 40 | 20.0% |
| McFarlan, NC | 92 | 40 | 20.0% |
| Morven, NC | 477 | 40 | 20.0% |
| City | Population | Air Quality Index | National Avg. |
| Verndale, MN | 477 | 29 | 42.0% |
| Burlington Junction, MO | 477 | 43 | 14.0% |
| Oak Grove Village, MO | 477 | 54 | 8.0% |
| Hildreth, NE | 477 | 19 | 62.0% |
| San Fidel, NM | 477 | 53 | 6.0% |
| Morven, NC | 477 | 40 | 20.0% |
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