| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 34°F | 54°F | 44°F | 4.3" |
| February | 31°F | 53°F | 41°F | 4.1" |
| March | 39°F | 64°F | 50°F | 7.1" |
| April | 48°F | 72°F | 59°F | 5.0" |
| May | 55°F | 77°F | 66°F | 5.2" |
| June | 65°F | 87°F | 76°F | 3.9" |
| July | 70°F | 91°F | 80°F | 6.4" |
| August | 71°F | 93°F | 81°F | 4.9" |
| September | 64°F | 87°F | 75°F | 3.3" |
| October | 56°F | 77°F | 65°F | 8.3" |
| November | 41°F | 65°F | 52°F | 5.3" |
| December | 35°F | 56°F | 44°F | 7.4" |
| Index | Hollister | North Carolina | National |
| Air quality index | 36 | 35 | 42 |
| Pollution index | 2,959,880 | 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 | 0.001% |
| Benzene | 0.040% |
| Carbon Tetrachloride | 0.004% |
| Lead | 0.010% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Norlina, NC | 1,197 | 36 | 28.0% |
| Castalia, NC | 276 | 36 | 28.0% |
| Enfield, NC | 2,348 | 36 | 28.0% |
| Warrenton, NC | 1,036 | 36 | 28.0% |
| Centerville, NC | 302 | 36 | 28.0% |
| Hollister, NC | 860 | 36 | 28.0% |
| City | Population | Air Quality Index | National Avg. |
| Riceville, IA | 860 | 15 | 70.0% |
| Gaston, IN | 860 | 35 | 30.0% |
| Washington, LA | 860 | 41 | 18.0% |
| Calvert Beach, MD | 860 | 41 | 18.0% |
| North Light Plant, NM | 860 | 49 | 2.0% |
| Hollister, NC | 860 | 36 | 28.0% |
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