| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 29°F | 51°F | 38°F | 10.2" |
| February | 30°F | 53°F | 40°F | 5.8" |
| March | 38°F | 64°F | 49°F | 5.1" |
| April | 45°F | 73°F | 58°F | 7.5" |
| May | 53°F | 79°F | 65°F | 4.8" |
| June | 61°F | 85°F | 72°F | 8.0" |
| July | 64°F | 85°F | 73°F | 8.3" |
| August | 63°F | 85°F | 73°F | 7.8" |
| September | 57°F | 81°F | 67°F | 6.9" |
| October | 45°F | 72°F | 56°F | 9.0" |
| November | 35°F | 62°F | 47°F | 11.7" |
| December | 33°F | 55°F | 42°F | 12.6" |
| Index | Hiawassee | Georgia | National |
| Air quality index | 37 | 41 | 42 |
| Pollution index | 2,562,830 | 1,874,972 | 2,726,193 |
| Measurement | Total |
| Days measured | 340 |
| Days with good air quality | 259 |
| Days with moderate air quality | 81 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.010% |
| Benzene | 0.030% |
| Carbon Tetrachloride | 0.010% |
| Lead | 0.020% |
| Mercury | 0.010% |
| City | Population | Air Quality Index | National Avg. |
| Young Harris, GA | 1,059 | 37 | 26.0% |
| Hayesville, NC | 387 | 37 | 26.0% |
| Blairsville, GA | 725 | 37 | 26.0% |
| Tate City, GA | 0 | 41 | 18.0% |
| Hiawassee, GA | 1,104 | 37 | 26.0% |
| City | Population | Air Quality Index | National Avg. |
| Archer, FL | 1,104 | 35 | 30.0% |
| Cavetown, MD | 1,104 | 40 | 20.0% |
| Nashwauk, MN | 1,104 | 35 | 30.0% |
| Gerald, MO | 1,104 | 39 | 22.0% |
| Alliance, NC | 1,104 | 37 | 26.0% |
| Hiawassee, GA | 1,104 | 37 | 26.0% |
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