| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 36°F | 52°F | 43°F | 4.5" |
| February | 32°F | 48°F | 39°F | 3.5" |
| March | 39°F | 58°F | 47°F | 3.7" |
| April | 48°F | 66°F | 57°F | 7.6" |
| May | 56°F | 72°F | 64°F | 6.5" |
| June | 67°F | 83°F | 74°F | 11.3" |
| July | 72°F | 88°F | 79°F | 6.5" |
| August | 72°F | 87°F | 79°F | 7.8" |
| September | 66°F | 82°F | 74°F | 3.2" |
| October | 58°F | 73°F | 65°F | 16.2" |
| November | 44°F | 63°F | 52°F | 6.3" |
| December | 36°F | 52°F | 43°F | 6.5" |
| Index | Cheriton | Virginia | National |
| Air quality index | 40 | 58 | 42 |
| Pollution index | 244,779 | 1,561,881 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 317 |
| Days with moderate air quality | 48 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.000% |
| Benzene | 0.003% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.000% |
| Mercury | 0.000% |
| City | Population | Air Quality Index | National Avg. |
| Nassawadox, VA | 558 | 40 | 20.0% |
| Cape Charles, VA | 1,245 | 40 | 20.0% |
| Eastville, VA | 541 | 40 | 20.0% |
| Cheriton, VA | 497 | 40 | 20.0% |
| City | Population | Air Quality Index | National Avg. |
| Angoon, AK | 497 | 20 | 60.0% |
| Cohasset, CA | 497 | 46 | 8.0% |
| Bird City, KS | 497 | 19 | 62.0% |
| Secretary, MD | 497 | 41 | 18.0% |
| Ghent, MN | 497 | 32 | 36.0% |
| Cheriton, VA | 497 | 40 | 20.0% |
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