| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 27°F | 44°F | 34°F | 3.0" |
| February | 28°F | 46°F | 36°F | 5.4" |
| March | 37°F | 56°F | 45°F | 4.1" |
| April | 46°F | 66°F | 55°F | 8.1" |
| May | 54°F | 72°F | 62°F | 6.4" |
| June | 61°F | 80°F | 70°F | 4.2" |
| July | 64°F | 82°F | 72°F | 5.2" |
| August | 64°F | 81°F | 71°F | 8.4" |
| September | 57°F | 75°F | 65°F | 12.4" |
| October | 47°F | 66°F | 56°F | 13.8" |
| November | 37°F | 56°F | 45°F | 6.0" |
| December | 32°F | 48°F | 39°F | 5.2" |
| Index | Lowgap | North Carolina | National |
| Air quality index | 45 | 35 | 42 |
| Pollution index | 1,016,480 | 2,789,538 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 225 |
| Days with moderate air quality | 140 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.040% |
| Benzene | 0.002% |
| Carbon Tetrachloride | 0.000% |
| Lead | 0.040% |
| Mercury | 0.001% |
| City | Population | Air Quality Index | National Avg. |
| Sparta, NC | 1,878 | 26 | 48.0% |
| Fries, VA | 499 | 41 | 18.0% |
| Galax, VA | 6,402 | 41 | 18.0% |
| Fancy Gap, VA | 65 | 41 | 18.0% |
| Dobson, NC | 1,511 | 45 | 10.0% |
| Lowgap, NC | 246 | 45 | 10.0% |
| City | Population | Air Quality Index | National Avg. |
| Sanford, AL | 246 | 35 | 30.0% |
| Garland, AR | 246 | 39 | 22.0% |
| Del Muerto, AZ | 246 | 17 | 66.0% |
| Harvel, IL | 246 | 40 | 20.0% |
| Houstonia, MO | 246 | 38 | 24.0% |
| Lowgap, NC | 246 | 45 | 10.0% |
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