| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 44°F | 63°F | 53°F | 2.9" |
| February | 45°F | 65°F | 54°F | 3.1" |
| March | 52°F | 71°F | 60°F | 2.5" |
| April | 59°F | 77°F | 68°F | 3.3" |
| May | 67°F | 83°F | 74°F | 3.0" |
| June | 73°F | 88°F | 80°F | 5.3" |
| July | 76°F | 90°F | 82°F | 4.3" |
| August | 76°F | 90°F | 82°F | 6.4" |
| September | 72°F | 86°F | 79°F | 5.8" |
| October | 63°F | 79°F | 70°F | 3.4" |
| November | 52°F | 71°F | 61°F | 1.4" |
| December | 48°F | 67°F | 56°F | 2.6" |
| Index | Brunswick | Georgia | National |
| Air quality index | 36 | 41 | 50 |
| Pollution index | 380,728 | 3,237,553 | 5,066,862 |
| Measurement | Total |
| Days measured | 279 |
| Days with good air quality | 254 |
| Days with moderate air quality | 25 |
| Days w/ poor A.Q. for sensitive groups | 0 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.001% |
| Benzene | 0.010% |
| Carbon Tetrachloride | 0.001% |
| Lead | 0.001% |
| Mercury | 0.000% |
| City, State | Population | Air Quality Index | National Avg. |
| St. Simons, GA | 13,480 | 36 | 28% |
| Country Club Estates, GA | 8,301 | 36 | 28% |
| Woodbine, GA | 1,681 | 36 | 28% |
| Darien, GA | 2,825 | 36 | 28% |
| Dock Junction, GA | 6,822 | 36 | 28% |
| Brunswick, GA | 15,997 | 36 | 28% |
| City, State | Population | Air Quality Index | National Avg. |
| Crawfordsville, IN | 15,996 | 42 | 16% |
| Cedar Mill, OR | 15,993 | 38 | 24% |
| Pinewood, FL | 15,988 | 41 | 18% |
| East Riverdale, MD | 15,984 | 47 | 6% |
| Seven Oaks, SC | 15,981 | 43 | 14% |
| Brunswick, GA | 15,997 | 36 | 28% |
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