| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 35°F | 55°F | 44°F | 5.9" |
| February | 35°F | 57°F | 45°F | 7.1" |
| March | 42°F | 65°F | 53°F | 6.6" |
| April | 51°F | 74°F | 62°F | 8.3" |
| May | 59°F | 80°F | 69°F | 8.5" |
| June | 68°F | 87°F | 77°F | 13.5" |
| July | 72°F | 89°F | 80°F | 8.2" |
| August | 71°F | 88°F | 78°F | 19.4" |
| September | 65°F | 82°F | 73°F | 24.1" |
| October | 54°F | 75°F | 63°F | 15.3" |
| November | 43°F | 64°F | 52°F | 3.5" |
| December | 39°F | 59°F | 48°F | 8.7" |
| Index | Greenville | North Carolina | National |
| Air quality index | 38 | 35 | 42 |
| Pollution index | 2,959,880 | 2,789,538 | 2,726,193 |
| Measurement | Total |
| Days measured | 352 |
| Days with good air quality | 308 |
| Days with moderate air quality | 44 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.040% |
| Carbon Tetrachloride | 0.004% |
| Lead | 0.010% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Bear Grass, NC | 82 | 0 | 100.0% |
| Grimesland, NC | 392 | 0 | 100.0% |
| Pinetops, NC | 1,412 | 36 | 28.0% |
| Belvoir, NC | 452 | 38 | 24.0% |
| Falkland, NC | 183 | 38 | 24.0% |
| Greenville, NC | 92,826 | 38 | 24.0% |
| City | Population | Air Quality Index | National Avg. |
| Menifee, CA | 92,968 | 89 | 78.0% |
| Edmond, OK | 93,101 | 48 | 4.0% |
| Asheville, NC | 92,328 | 44 | 12.0% |
| Fishers, IN | 93,488 | 54 | 8.0% |
| Lawton, OK | 93,535 | 43 | 14.0% |
| Greenville, NC | 92,826 | 38 | 24.0% |
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